{"id":2413,"date":"2026-05-27T22:43:38","date_gmt":"2026-05-27T17:13:38","guid":{"rendered":"https:\/\/mymockmate.com\/notes\/?p=2413"},"modified":"2026-07-15T17:30:13","modified_gmt":"2026-07-15T12:00:13","slug":"ncert-class-9-science-motion-chapter-complete-solutions-and-mcqs","status":"publish","type":"post","link":"https:\/\/mymockmate.com\/notes\/ncert-class-9-science-motion-chapter-complete-solutions-and-mcqs\/","title":{"rendered":"NCERT Class 9 Science Chapter 4 Describing Motion Around Us Complete Solutions and MCQs"},"content":{"rendered":"<div class=\"mymoc-top mymoc-entity-placement\" id=\"mymoc-3675567658\"><div id=\"mymoc-3994814926\"><a href=\"https:\/\/amzn.to\/4upqwUD\" aria-label=\"laptop-1\"><img src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/laptop-1.png\" alt=\"\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/laptop-1.png 1303w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/laptop-1-300x91.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/laptop-1-1024x310.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/laptop-1-768x233.png 768w\" sizes=\"(max-width: 1303px) 100vw, 1303px\" width=\"1303\" height=\"395\"><\/a><\/div><\/div><div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-bottom-right\"><a href=\"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2413?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Print Content\"><span class=\"pdfprnt-button-title pdfprnt-button-print-title\">Print<\/span><\/a> <span class=\"pdfprnt-count-generation\">135<\/span><\/div>\n<h1 class=\"wp-block-heading\">Short Intro<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">&ldquo;Describing Motion Around Us&rdquo; chapter explains the concepts of motion, distance, displacement, speed, velocity, acceleration, graphs of motion, kinematic equations, and circular motion. This chapter is very important for exams because it contains conceptual questions, graph-based numericals, and formula applications. <\/p>\n\n\n\n<h1 class=\"wp-block-heading\">Quick Information Box<\/h1>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Topic<\/th><th>Details<\/th><\/tr><\/thead><tbody><tr><td>Chapter Name<\/td><td>Describing Motion Around Us<\/td><\/tr><tr><td>Subject<\/td><td>Science<\/td><\/tr><tr><td>Grade<\/td><td>Class 9<\/td><\/tr><tr><td>Main Topics<\/td><td>Motion, Velocity, Acceleration<\/td><\/tr><tr><td>Important Concepts<\/td><td>Graphs &amp; Kinematic Equations<\/td><\/tr><tr><td>Exam Importance<\/td><td>Very High<\/td><\/tr><tr><td>Numerical Problems<\/td><td>Included<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">Concepts Used (Topics Covered)<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Distance and displacement<\/li>\n\n\n\n<li>Speed and velocity<\/li>\n\n\n\n<li>Average velocity<\/li>\n\n\n\n<li>Average acceleration<\/li>\n\n\n\n<li>Position-time graph<\/li>\n\n\n\n<li>Velocity-time graph<\/li>\n\n\n\n<li>Uniform motion<\/li>\n\n\n\n<li>Non-uniform motion<\/li>\n\n\n\n<li>Kinematic equations<\/li>\n\n\n\n<li>Uniform circular motion<\/li>\n\n\n\n<li>Motion in a plane<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Important Formulas<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Average Speed Formula<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mtext>Average&nbsp;Speed<\/mtext><mo>=<\/mo><mfrac><mtext>Total&nbsp;Distance<\/mtext><mtext>Total&nbsp;Time<\/mtext><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">\\text{Average Speed} = \\frac{\\text{Total Distance}}{\\text{Total Time}}<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Average Velocity Formula<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msub><mi>v<\/mi><mrow><mi>a<\/mi><mi>v<\/mi><\/mrow><\/msub><mo>=<\/mo><mfrac><mi>s<\/mi><mi>t<\/mi><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">v_{av}=\\frac{s}{t}<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Acceleration Formula<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi>a<\/mi><mo>=<\/mo><mfrac><mrow><mi>v<\/mi><mo>&minus;<\/mo><mi>u<\/mi><\/mrow><mi>t<\/mi><\/mfrac><\/mrow><annotation encoding=\"application\/x-tex\">a=\\frac{v-u}{t}<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">First Equation of Motion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi>v<\/mi><mo>=<\/mo><mi>u<\/mi><mo>+<\/mo><mi>a<\/mi><mi>t<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">v=u+at<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Second Equation of Motion<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><mi>s<\/mi><mo>=<\/mo><mi>u<\/mi><mi>t<\/mi><mo>+<\/mo><mfrac><mn>1<\/mn><mn>2<\/mn><\/mfrac><mi>a<\/mi><msup><mi>t<\/mi><mn>2<\/mn><\/msup><\/mrow><annotation encoding=\"application\/x-tex\">s=ut+\\frac{1}{2}at^2<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Third Equation of Motion<\/h2>\n\n\n\n<div class=\"internal-linking-related-contents\"><a href=\"https:\/\/mymockmate.com\/notes\/class-9-maths-exercise-1-1-solutions-coordinate-geometry-ncert-solutions\/\" class=\"template-2\"><span class=\"cta\">Related Topic to Read more<\/span><span class=\"postTitle\">NCERT Class 9 Maths Exercise 1.1 Solutions | Coordinate Geometry NCERT Solutions<\/span><\/a><\/div><p class=\"wp-block-paragraph\"><math xmlns=\"http:\/\/www.w3.org\/1998\/Math\/MathML\"><semantics><mrow><msup><mi>v<\/mi><mn>2<\/mn><\/msup><mo>=<\/mo><msup><mi>u<\/mi><mn>2<\/mn><\/msup><mo>+<\/mo><mn>2<\/mn><mi>a<\/mi><mi>s<\/mi><\/mrow><annotation encoding=\"application\/x-tex\">v^2=u^2+2as<\/annotation><\/semantics><\/math><\/p>\n\n\n\n<p class=\"has-luminous-vivid-orange-color has-text-color has-link-color has-x-large-font-size wp-elements-5421de3f04557da18a280aa07d25117b wp-block-paragraph\"><strong>Think It Over<\/strong><\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>1. How much distance should we maintain from the truck ahead to avoid a collision if it suddenly applies the brakes?<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-251-1024x683.png\" alt=\"image\" class=\"wp-image-3733\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-251-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-251-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-251-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-251.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>2. Does this distance depend upon the speed with which we are moving?<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-252-1024x683.png\" alt=\"image\" class=\"wp-image-3734\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-252-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-252-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-252-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-252.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<p class=\"has-luminous-vivid-orange-color has-text-color has-link-color has-x-large-font-size wp-elements-86800c736f203e1ffa67c6065a24e646 wp-block-paragraph\"><strong>Pause and Ponder<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li class=\"has-medium-font-size\"><strong>an athlete running back and forth on a straight track (Fig. 4.4), when will the displacement of the athlete be zero? What will be the total distance travelled in that case?<\/strong><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"704\" height=\"232\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-253.png\" alt=\"image\" class=\"wp-image-3735\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-253.png 704w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-253-300x99.png 300w\" sizes=\"(max-width: 704px) 100vw, 704px\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-254-1024x683.png\" alt=\"image\" class=\"wp-image-3736\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-254-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-254-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-254-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-254.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<ol start=\"2\" class=\"wp-block-list\">\n<li class=\"has-medium-font-size\"><strong>Fuel used up in a vehicle depends on which of the following? Justify your answer.<br>(i) Total distance travelled<br>(ii) Displacement<\/strong><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"819\" height=\"1024\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-257-819x1024.png\" alt=\"image\" class=\"wp-image-3739\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-257-819x1024.png 819w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-257-240x300.png 240w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-257-768x960.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-257.png 1122w\" sizes=\"(max-width: 819px) 100vw, 819px\"><\/figure>\n\n\n\n<ol start=\"3\" class=\"wp-block-list\">\n<li class=\"has-medium-font-size\"><strong>A ball rolls down an inclined track as shown in Fig. 4.6. Is its motion, a straight line motion? Assuming the starting point of the ball (O) to be the origin, can its motion from O to D be depicted using a horizontal line as shown in Fig. 4.3? Are the values of total distance travelled and magnitude of displacement from O equal or different at positions A, B, C and D?<\/strong><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"938\" height=\"69\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-258.png\" alt=\"image\" class=\"wp-image-3741\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-258.png 938w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-258-300x22.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-258-768x56.png 768w\" sizes=\"(max-width: 938px) 100vw, 938px\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"436\" height=\"117\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-259.png\" alt=\"image\" class=\"wp-image-3743\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-259.png 436w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-259-300x81.png 300w\" sizes=\"(max-width: 436px) 100vw, 436px\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-260-1024x683.png\" alt=\"image\" class=\"wp-image-3744\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-260-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-260-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-260-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-260.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<ol start=\"4\" class=\"wp-block-list\">\n<li class=\"has-medium-font-size\"><strong>During a family road trip, you drive 200 km north in three hours. Afterwards, you drive 200 km south in two hours. Find the average speed and average velocity for your entire trip<\/strong><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-261-1024x683.png\" alt=\"image\" class=\"wp-image-3745\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-261-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-261-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-261-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-261.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<ol start=\"5\" class=\"wp-block-list\">\n<li class=\"has-medium-font-size\"><strong>Under what condition(s) is the<br>(i) magnitude of average velocity of an object equal to its average speed?<br>(ii) magnitude of average velocity of an object zero while its average speed is not zero?<\/strong><\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-262-1024x819.png\" alt=\"image\" class=\"wp-image-3747\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-262-1024x819.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-262-300x240.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-262-768x615.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-262.png 1402w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<h1 class=\"wp-block-heading has-luminous-vivid-orange-color has-text-color has-link-color wp-elements-b1cc961dae7914ae4070ea8e718fb2f2\">Revise, Reflect, Refine<\/h1>\n\n\n\n<h1 class=\"wp-block-heading\">Question 1<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>My father went to a shop from home which is located at a distance of 250 m on a straight road. On reaching there, he discovered that he forgot to carry a cloth bag. He came home to take it, went to the shop again, bought provisions and came back home. How much was the total distance travelled by him? What was his displacement from home?<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-263-1024x683.png\" alt=\"image\" class=\"wp-image-3750\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-263-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-263-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-263-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-263.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 2<\/h1>\n\n\n\n<div class=\"internal-linking-related-contents\"><a href=\"https:\/\/mymockmate.com\/notes\/class-9-maths-exercise-1-2-solutions-coordinate-geometry-ncert-solutions\/\" class=\"template-2\"><span class=\"cta\">Related Topic to Read more<\/span><span class=\"postTitle\">NCERT Class 9 Maths Exercise 1.2 Solutions | Coordinate Geometry NCERT Solutions<\/span><\/a><\/div><p class=\"has-medium-font-size wp-block-paragraph\"><strong>A student runs from the ground floor to the fourth floor of a school building to collect a book and then comes down to their classroom on the second floor. If the height of each floor is 3 m, find:<br>(i) the total vertical distance travelled, and<br>(ii) their displacement from the starting point<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-264-1024x819.png\" alt=\"image\" class=\"wp-image-3752\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-264-1024x819.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-264-300x240.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-264-768x615.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-264.png 1402w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 3<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>A girl is riding her scooter and finds that its speedometer reading is constant. Is it possible for her scooter to be accelerating and if so, how?<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"842\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-265-1024x842.png\" alt=\"image\" class=\"wp-image-3753\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-265-1024x842.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-265-300x247.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-265-768x631.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-265.png 1383w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 4<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>A car starts from rest and its velocity reaches 24 m s&ndash;1 in 6 s. Find the average acceleration and the distance travelled in these 6 s.<\/strong><\/p><div class=\"mymoc-middle mymoc-entity-placement\" id=\"mymoc-3038967789\"><div id=\"mymoc-1422707594\"><a href=\"https:\/\/amzn.to\/43YYZi3\" aria-label=\"smart-phones\"><img src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones.png\" alt=\"\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones.png 1303w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones-300x76.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones-1024x259.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones-768x194.png 768w\" sizes=\"(max-width: 1303px) 100vw, 1303px\" width=\"1303\" height=\"329\"><\/a><\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-266-1024x819.png\" alt=\"image\" class=\"wp-image-3754\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-266-1024x819.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-266-300x240.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-266-768x615.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-266.png 1402w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 5<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>A motorbike moving with initial velocity 28 m s<sup>&ndash;1<\/sup> and constant acceleration stops after travelling 98 m. Find the acceleration of the motorbike and the time taken to come to a stop. <\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-267-1024x819.png\" alt=\"image\" class=\"wp-image-3755\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-267-1024x819.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-267-300x240.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-267-768x615.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-267.png 1402w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 6<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Following Figure shows a position-time graph of two objects A and B that are moving along the parallel tracks in the same direction. Do objects A and B ever have equal velocity? Justify your answer<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"347\" height=\"351\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-54.png\" alt=\"image\" class=\"wp-image-2450\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-54.png 347w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-54-297x300.png 297w\" sizes=\"(max-width: 347px) 100vw, 347px\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-268-1024x819.png\" alt=\"image\" class=\"wp-image-3756\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-268-1024x819.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-268-300x240.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-268-768x615.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-268.png 1402w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 7<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>A graph in Fig. 4.28 shows the change in position with time for two objects A and B moving in a straight line from 0 to 10 seconds. Choose the correct option(s).<br>(i) The average velocity of both over the 10 s time interval is equal since they have the same initial and final positions.<br>(ii) The average speeds of both over the 10 s time interval are equal since both cover equal distance in equal time.<br>(iii) The average speed of A over the 10 s time interval is lower than that of B since it covers a shorter distance than B in 10 seconds.<br>(iv) The average speed of A over the 10 s time interval is greater than that of B since B&rsquo;s speed is lower than A&rsquo;s in some segments.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"346\" height=\"349\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-55.png\" alt=\"image\" class=\"wp-image-2451\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-55.png 346w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-55-297x300.png 297w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-55-150x150.png 150w\" sizes=\"(max-width: 346px) 100vw, 346px\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-270-1024x683.png\" alt=\"image\" class=\"wp-image-3758\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-270-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-270-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-270-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-270.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 8<\/h1>\n\n\n\n<div class=\"internal-linking-related-contents\"><a href=\"https:\/\/mymockmate.com\/notes\/class-9-maths-end-of-chapter-exercise-solutions-coordinate-geometry-ncert-solutions\/\" class=\"template-2\"><span class=\"cta\">Related Topic to Read more<\/span><span class=\"postTitle\">NCERT Class 9 Maths End of Chapter Exercise Solutions | Coordinate Geometry<\/span><\/a><\/div><p class=\"has-medium-font-size wp-block-paragraph\"><strong>A truck driver driving at the speed of 54 km h<sup>&ndash;1<\/sup> notices a road sign with a speed limit of 40 km h<sup>&ndash;1<\/sup> (Fig. 4.29) for trucks. He slows down to 36 km h<sup>&ndash;1<\/sup> in 36 s. What was the distance travelled by him during this time? Assume the acceleration to be constant while slowing down.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"187\" height=\"336\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-269.png\" alt=\"image\" class=\"wp-image-3757\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-269.png 187w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-269-167x300.png 167w\" sizes=\"(max-width: 187px) 100vw, 187px\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-271-1024x683.png\" alt=\"image\" class=\"wp-image-3761\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-271-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-271-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-271-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-271.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 9<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>A car starts from rest and accelerates uniformly to 20 m s<sup>&ndash;1<\/sup> in 5 seconds. It then travels at 20 m s<sup>&ndash;1<\/sup> for 10 seconds and  finally applies the brake (with uniform acceleration) to stop in 6 seconds. Find the total distance travelled.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-272-1024x683.png\" alt=\"image\" class=\"wp-image-3762\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-272-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-272-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-272-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-272.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Question 10<\/h1>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>A bus is travelling at 36 km h<sup>&ndash;1<\/sup> when the driver sees an obstacle 30 m ahead. The driver takes 0.5 seconds to react before pressing the brake. Once the brake is applied, the velocity of the bus reduces with constant acceleration of 2.5 m s<sup>&ndash;2<\/sup>. Will the bus be able to stop before reaching the obstacle?<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-273-1024x683.png\" alt=\"image\" class=\"wp-image-3763\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-273-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-273-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-273-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-273.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Question 11 <\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>A student said, &ldquo;The Earth moves around the Sun&rdquo;. In this context, discuss whether an object kept on the Earth can be considered to be at rest.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-274-1024x819.png\" alt=\"image\" class=\"wp-image-3766\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-274-1024x819.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-274-300x240.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-274-768x615.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-274.png 1402w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">Question 12 <\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>The velocity-time graph from 0 s to 120 s for a cyclist is shown in Following Figure Shade the areas (in different colours) representing the displacement of the cyclist<br>(i) while cyclist is moving with constant velocity.<br>(ii) when the velocity of cyclist is decreasing.<br>Also, calculate the displacement and average acceleration in the 120 s time interval<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"172\" height=\"170\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-56.png\" alt=\"image\" class=\"wp-image-2452\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-279-1024x819.png\" alt=\"image\" class=\"wp-image-3775\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-279-1024x819.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-279-300x240.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-279-768x615.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-279.png 1402w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">Question 13 <\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A girl is preparing for her first marathon by running on a straight<br>road. She uses a smartwatch to calculate her running speed at<br>different intervals. The graph (Shown in Following Figure) depicts her velocity versus<br>time. Estimate the distance she ran based on the graph.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"189\" height=\"173\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-57.png\" alt=\"image\" class=\"wp-image-2453\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-280-1024x683.png\" alt=\"image\" class=\"wp-image-3777\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-280-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-280-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-280-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-280.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">Question 14 <\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>On entering a state highway, a car continues to move with a constant velocity of 6 m s<sup>&ndash;1<\/sup> for 2 minutes and then accelerates with a constant acceleration 1 m s<sup>&ndash;2<\/sup> for 6 seconds. Find the displacement of the car on the state highway in the 2 min 6 s time interval by drawing a<br>velocity-time graph for its motion.<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-276-1024x819.png\" alt=\"image\" class=\"wp-image-3768\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-276-1024x819.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-276-300x240.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-276-768x615.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-276.png 1402w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">Question 15<\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Two cars A and B start moving with a constant acceleration from rest, in a straight line. Car A attains a velocity of 5 m s<sup>&ndash;1<\/sup> in 5 s. Car B attains a velocity of 3 m s<sup>&ndash;1<\/sup> in 10 s. Plot the velocity-time graphs for both the cars in the same graph. Using the graph, calculate the displacement in the two time intervals mentioned (Hint: Calculate the acceleration in both cases. Then calculate their velocities at five instants of time to plot the graph).<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"819\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-277-1024x819.png\" alt=\"image\" class=\"wp-image-3769\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-277-1024x819.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-277-300x240.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-277-768x615.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-277.png 1402w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">Question 16 <\/h2>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><strong>Rohan studies science from 6 PM to 7:30 PM at home. Consider the tip of the minute&rsquo;s hand of the wall clock. During the given time interval, what is its:<br>(i) distance travelled,<br>(ii) displacement,<br>(iii) speed, and<br>(iv) velocity.<br>The length of the minute&rsquo;s hand is 7 cm (Shown in Following Figure).<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"100\" height=\"110\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-58.png\" alt=\"image\" class=\"wp-image-2454\"><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-278-1024x683.png\" alt=\"image\" class=\"wp-image-3771\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-278-1024x683.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-278-300x200.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-278-768x512.png 768w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/image-278.png 1536w\" sizes=\"(max-width: 1024px) 100vw, 1024px\"><\/figure>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">Common Mistakes<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Confusing speed with velocity<\/li>\n\n\n\n<li>Forgetting SI units<\/li>\n\n\n\n<li>Using wrong sign for acceleration<\/li>\n\n\n\n<li>Mixing distance and displacement<\/li>\n\n\n\n<li>Incorrect graph slope calculations<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Exam Tips<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Memorize all three equations of motion.<\/li>\n\n\n\n<li>Practice graph-based numericals daily.<\/li>\n\n\n\n<li>Always convert km\/h into m\/s before solving.<\/li>\n\n\n\n<li>Draw diagrams for displacement problems.<\/li>\n\n\n\n<li>Remember: slope gives velocity or acceleration.<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">Practice MCQs<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">1. SI unit of acceleration is:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A. m<br>B. m\/s<br>C. m\/s&sup2;<br>D. km\/h<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. m\/s&sup2;<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">2. Which quantity has direction?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A. Speed<br>B. Distance<br>C. Velocity<br>D. Path<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Velocity<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">3. Area under velocity-time graph gives:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A. Speed<br>B. Distance<br>C. Displacement<br>D. Acceleration<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Displacement<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h2 class=\"wp-block-heading\">4. Uniform circular motion has:<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">A. Zero acceleration<br>B. Constant direction<br>C. Changing velocity direction<br>D. Zero speed<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Answer<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C. Changing velocity direction<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\">\n\n\n\n<h1 class=\"wp-block-heading\">FAQ Section<\/h1>\n\n\n\n<h2 class=\"wp-block-heading\">Q1. What is displacement?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Displacement is the shortest distance between initial and final position with direction.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q2. What is acceleration?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Acceleration is the rate of change of velocity.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q3. What does slope of velocity-time graph represent?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">It represents acceleration.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q4. Which graph gives displacement?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Area under velocity-time graph gives displacement.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Q5. What is uniform motion?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Motion with constant velocity is called uniform motion.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Prepare smarter with complete chapter notes, solved numericals, MCQs, assertion-reason questions, and exam-ready solutions only on <a target=\"_blank\" rel=\"noreferrer noopener\">MyMockMate<\/a>. Start practicing daily and improve your Science scores with confidence!<\/p>\n\n\n \n<div data-block=\"gutenkit\/dual-button\" data-post-id=\"2413\" id=\"block-fde0a9ea-6ba9-4f43-a59f-dcdd9c345af9\" class=\"wp-block-gutenkit-dual-button gkit-dual-button-middle-text gkit345af9 gutenkit-block\"><div class=\"gkit-dual-btn-container\"><div class=\"gkit-dual-btn-wrapper\"><a class=\"gkit-dual-btn gkit-dual-btn-first\" href=\"https:\/\/mymockmate.com\/notes\/ncert-class-9-science-chapter-3-tissues-in-action-solutions\/\"><span class=\"gkit-dual-btn-text\">&lt;&lt; Chapter 3<\/span><\/a><span class=\"gkit-dual-btn-middle-text\">Or<\/span><a class=\"gkit-dual-btn gkit-dual-btn-second\" href=\"https:\/\/mymockmate.com\/notes\/ncert-class-9-science-exploring-mixtures-and-their-separation-solutions\/\"><span class=\"gkit-dual-btn-text\">Chapter 5 &gt;&gt;<\/span><\/a><\/div><\/div><\/div>\n \n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<div class=\"pdfprnt-buttons pdfprnt-buttons-post pdfprnt-top-bottom-right\"><a href=\"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2413?print=print\" class=\"pdfprnt-button pdfprnt-button-print\" target=\"_blank\"><img decoding=\"async\" src=\"https:\/\/mymockmate.com\/notes\/wp-content\/plugins\/pdf-print\/images\/print.png\" alt=\"image_print\" title=\"Print Content\"><span class=\"pdfprnt-button-title pdfprnt-button-print-title\">Print<\/span><\/a> <span class=\"pdfprnt-count-generation\">135<\/span><\/div><div class=\"mymoc-bottom mymoc-entity-placement\" id=\"mymoc-1248331849\"><div id=\"mymoc-1422707594\"><a href=\"https:\/\/amzn.to\/43YYZi3\" aria-label=\"smart-phones\"><img src=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones.png\" alt=\"\" srcset=\"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones.png 1303w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones-300x76.png 300w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones-1024x259.png 1024w, https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/06\/smart-phones-768x194.png 768w\" sizes=\"(max-width: 1303px) 100vw, 1303px\" width=\"1303\" height=\"329\"><\/a><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p> 135 Short Intro &ldquo;Describing Motion Around Us&rdquo; chapter explains the concepts of motion, distance, displacement, speed, velocity, acceleration, graphs of motion, kinematic equations, and&#8230;<\/p>\n","protected":false},"author":3,"featured_media":2414,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"postBodyCss":"","postBodyMargin":[],"postBodyPadding":[],"postBodyBackground":{"backgroundType":"classic","gradient":""},"footnotes":""},"categories":[4,12],"tags":[1250,1247,1252,1249,1246,1253,1251,1248,1254],"class_list":["post-2413","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-class-9","category-science","tag-acceleration-questions-answers","tag-class-9-motion-chapter-solutions","tag-class-9-science-motion-notes","tag-describing-motion-around-us-answers","tag-displacement-and-velocity-solutions","tag-kinematic-equations-class-9","tag-motion-mcqs","tag-motion-numericals-class-9","tag-velocity-time-graph-solutions"],"featured_image_src":"https:\/\/mymockmate.com\/notes\/wp-content\/uploads\/2026\/05\/NCERT-Class-9-Motion-Chapter-Complete-Solutions-and-MCQs.png","author_info":{"display_name":"Team Mymockmate (L)","author_link":"https:\/\/mymockmate.com\/notes\/author\/luckp\/"},"_links":{"self":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2413","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/comments?post=2413"}],"version-history":[{"count":14,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2413\/revisions"}],"predecessor-version":[{"id":6712,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/posts\/2413\/revisions\/6712"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/media\/2414"}],"wp:attachment":[{"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/media?parent=2413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/categories?post=2413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mymockmate.com\/notes\/wp-json\/wp\/v2\/tags?post=2413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}