Motion in One Dimension Quiz - ICSE Class 9 Physics

Free practice quiz: Motion in One Dimension (ICSE Class 9 Physics). 67 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This ICSE Class 9 Physics practice quiz has 67 multiple-choice questions on Motion in One Dimension, and 67 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. A car accelerates uniformly from rest for 5 seconds. If its final velocity is 20 m/s, what is its acceleration?

   1. 2 m/s²
   2. 4 m/s²
   3. 5 m/s²
   4. 10 m/s²
   Show answer

   Answer: B. 4 m/s²

   Using the first equation of motion, v = u + at. Given u = 0 m/s (rest), v = 20 m/s, and t = 5 s. Therefore, 20 = 0 + a * 5, which gives a = 20/5 = 4 m/s².

2. An object starts from rest and accelerates uniformly at 3 m/s² for 10 seconds. What is the distance covered during this time?

   1. 150 m
   2. 300 m
   3. 100 m
   4. 200 m
   Show answer

   Answer: A. 150 m

   Using the equation s = ut + (1/2)at². Given u = 0 m/s (rest), a = 3 m/s², t = 10 s. So, s = (0)(10) + (1/2)(3)(10)². This simplifies to s = (1/2)(3)(100) = 150 m.

3. A car starts from rest and accelerates uniformly for 10 seconds, reaching a speed of 20 m/s. It then travels at a constant speed for 15 seconds before decelerating uniformly to rest in 5 seconds. What is the total distance traveled?

   1. 350 m
   2. 450 m
   3. 500 m
   4. 550 m
   Show answer

   Answer: B. 450 m

   The motion can be divided into three phases: Phase 1 (Acceleration): Initial velocity (u) = 0 m/s, final velocity (v) = 20 m/s, time (t) = 10 s. The acceleration (a) = (v - u) / t = (20 - 0) / 10 = 2 m/s². The distance covered (s1) = ut + (1/2)at² = 0(10) + (1/2)(2)(10)² = 100 m. Phase 2 (Constant Speed): The car travels at a constant speed of 20 m/s for 15 seconds. The distance covered (s2) = speed × time = 20 m/s × 15 s = 300 m. Phase 3 (Deceleration): Initial velocity (u) = 20 m/s, final velocity (v) = 0 m/s, time (t) = 5 s. The acceleration (a) = (v - u) / t = (0 - 20) / 5 = -4 m/s². The distance covered (s3) = ut + (1/2)at² = 20(5) + (1/2)(-4)(5)² = 100 - 50 = 50 m. Total distance traveled = s1 + s2 + s3 = 100 m + 300 m + 50 m = 450 m.

4. An object starts from rest and undergoes uniform acceleration. If it covers 100 meters in 10 seconds, what is its acceleration?

   1. 1 m/s²
   2. 2 m/s²
   3. 3 m/s²
   4. 4 m/s²
   Show answer

   Answer: B. 2 m/s²

   Using the equation of motion: s = ut + (1/2)at². Given distance (s) = 100 m, initial velocity (u) = 0 m/s (starts from rest), and time (t) = 10 s. Substituting these values: 100 = (0)(10) + (1/2)a(10)². This simplifies to 100 = (1/2)a(100), so 100 = 50a. Therefore, a = 100 / 50 = 2 m/s².

5. A person walks 100 m towards the east in 60 seconds. What is their average velocity?

   1. 100/60 m/s east
   2. 60/100 m/s east
   3. 100/60 m/s west
   4. 60/100 m/s west
   Show answer

   Answer: A. 100/60 m/s east

   Average velocity is defined as total displacement divided by total time. The displacement is 100 m towards the east, and the total time is 60 seconds. Therefore, the average velocity is (100 meters East) / (60 seconds) = 100/60 m/s East.

More questions in this quiz

Answers and explanations are in the full quiz.

1. A train travels at a constant speed of 60 km/h. How far does it travel in 2.5 hours?
2. A ball is thrown vertically upwards with an initial velocity of 30 m/s. What will be its velocity after 2 seconds, assuming acceleration due to gravity is -10 m/s²?
3. A particle moves with uniform acceleration. Its velocity-time graph is a straight line with a positive slope. What can be inferred about the motion?
4. If the displacement of an object is zero, what can be said about its motion?
5. A car starts from rest and travels 100 meters in 10 seconds with uniform acceleration. What is its acceleration?
6. An object moves along a straight line. Its position x at time t is given by x = 5t² - 3t + 2. What is its velocity at t = 3 seconds?
7. A cyclist travels the first half of a certain distance at a speed of 10 km/h and the second half at a speed of 20 km/h. What is the average speed for the entire journey?
8. A body dropped from a height h reaches the ground in time t. If the same body is dropped from a height of 4h, in what time will it reach the ground?
9. What is the magnitude of the average velocity of an object if it starts at x = 5 m, moves to x = -5 m, and then returns to x = 5 m in 10 seconds?
10. A car is moving with a velocity of 20 m/s. The driver applies the brakes, and the car decelerates uniformly at 5 m/s². What is the distance covered by the car before it comes to rest?
11. Which of the following quantities is a vector quantity?
12. A runner completes one lap of a circular track of radius 100 m in 50 seconds. What is their average velocity for one lap?
13. If an object is moving with constant velocity, what is its acceleration?
14. A car travels a distance of 60 km in 2 hours. What is its average speed in m/s?
15. A particle's position is given by x(t) = 2t³ - 5t² + 7t - 1. What is its acceleration at t = 2 seconds?
16. A body is thrown vertically upwards with an initial velocity u. It reaches a maximum height H. What is the velocity of the body at height H/2?
17. The distance-time graph of a moving object is a straight line inclined to the time axis. This indicates that the object is moving with:
18. A car starts from rest and accelerates uniformly at 2 m/s² for 10 seconds. It then travels at a constant velocity for 30 seconds. Finally, it decelerates uniformly and comes to rest in 5 seconds. What is the total distance traveled?
19. A particle moves along a straight line such that its velocity is given by v(t) = 6t² - 4t + 1, where v is in m/s and t is in seconds. What is its acceleration at t = 3 seconds?
20. A particle's position x at time t is given by x(t) = 5t³ - 2t² + 3t - 1. What is its acceleration at t = 2 seconds?
21. A body starts from rest and travels for 10 seconds with uniform acceleration. If it covers a distance of 200 meters in this time, what is its acceleration?
22. Two trains, A and B, start from the same point at the same time and move along a straight line. Train A moves with a uniform velocity of 20 m/s, and Train B starts from rest and accelerates uniformly at 2 m/s². What is the distance between the two trains after 15 seconds?
23. An object is dropped from a height of 80 meters. Assuming the acceleration due to gravity is 10 m/s², how long does it take to reach the ground?
24. A person walks 100 meters east in 1 minute and then 200 meters north in 2 minutes. What is their average velocity for the entire journey?
25. A cyclist travels a distance of 30 km in 2 hours. What is their average speed in m/s?
26. A particle moves from point A to point B, which are separated by 100 meters. The particle travels along a curved path. What is the magnitude of the displacement of the particle?
27. If the velocity-time graph of a moving object is a horizontal straight line, it means the object is moving with:
28. A stone is thrown vertically upwards with an initial velocity of 40 m/s. What is the maximum height it reaches? (Take g = 10 m/s²)
29. A train travels at 72 km/h. How many seconds will it take to cover a distance of 1.8 km?
30. An object is moving with a constant velocity of 10 m/s. What is its acceleration?
31. A car accelerates uniformly from rest and travels 100 m in 5 seconds. What is its acceleration?
32. If an object's speed is increasing, its acceleration is:
33. A particle is projected vertically upwards with a velocity of 30 m/s. After what time will it return to the starting point? (Take g = 10 m/s²)
34. Which of the following statements is true for an object moving with uniform velocity?
35. A car covers a distance of 300 meters in 20 seconds. What is the average velocity if the displacement is 300 meters?
36. A body starts from rest and travels with constant acceleration. If it covers a distance of 100 m in the first 5 seconds, what distance will it cover in the next 5 seconds?
37. A particle's velocity is given by v(t) = 4t - 5. What is its average velocity between t = 1 s and t = 4 s?
38. A car traveling at 20 m/s applies brakes and decelerates uniformly at 4 m/s². How far does it travel before coming to rest?
39. If the velocity of a particle is given by v(t) = 3t + 2, what is its position at t = 5 seconds, assuming it starts from x = 5 meters at t = 0?
40. A body is thrown vertically upwards with an initial velocity of 20 m/s. After how much time will it be at a height of 15 m?
41. A particle moves with uniform acceleration. Its position-time graph is a parabola opening upwards. What can be inferred about the motion?
42. An object travels 100 m in the first 10 seconds and 200 m in the next 10 seconds. If the acceleration is uniform, what is the magnitude of the acceleration?
43. A person walks 50 meters east in 30 seconds and then walks 50 meters west in 30 seconds. What is their average velocity?
44. The speed of a car is uniformly increased from 10 m/s to 30 m/s in 10 seconds. What is the acceleration?
45. A body falls freely from a height of 45 meters. If the acceleration due to gravity is 10 m/s², in what time will it reach the ground?
46. If an object travels equal distances in equal intervals of time, what is its motion called?
47. A particle's position is given by x(t) = 3t² + 2t - 1. What is its velocity at t = 4 seconds?
48. A car starts from rest and accelerates uniformly at 3 m/s². What is its displacement after 5 seconds?
49. If an object is moving with constant acceleration, its velocity-time graph is a:
50. An object is thrown vertically upwards with an initial velocity of 20 m/s. What is the maximum height reached? (Take g = 10 m/s²)
51. A train accelerates uniformly from rest at 1.5 m/s² for 20 seconds. What is its final velocity?
52. A particle's position x is given by x(t) = 2t³ + t² - 5t + 3. What is its acceleration at t = 3 seconds?
53. A runner covers a distance of 400 meters in 50 seconds. What is their average speed?
54. If an object's velocity is decreasing, its acceleration is:
55. A car starts from rest and accelerates uniformly for 8 seconds, covering a distance of 80 meters. What is its acceleration?
56. A person throws a ball vertically upwards with a velocity of 10 m/s. What is the time taken to reach the maximum height? (Take g = 10 m/s²)
57. If an object is moving with a velocity of 5 m/s and accelerates at 2 m/s², what will be its velocity after 10 seconds?
58. A train starting from rest moves with uniform acceleration. If it covers 200 meters in 10 seconds, what is its acceleration?
59. Which quantity is represented by the area under the acceleration-time graph?
60. A particle is moving with uniform velocity. What is the magnitude of its displacement in time t?

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