Class IX Chapter : Motion Date of Taking Test : December 25, 2024 Time: 20 Minutes 1. For any given situation, Displacement/Distance is _________ (a) always less than 1 (b) either equal to 1 or more than 1 (c) always more than 1 (d) either equal to 1 or less than 1 None 2. Identify the situation in which the distance and displacement will be equal. (a) An athlete running on a straight track. (b) A bus moving on a circular road (c) A pendulum moving to and fro (d) A planet moving around the sun. None 3. A particle starts from A, goes to C and then returns to B. The displacement of the particle is _________. (a) 50 km (b) 40 km (c) 25 km (d) 35 km None 4. An area under a velocity-time graph represents a physical quantity which has the unit of (a) m (b) m2 (c) ms -1 (d) ms -2 None 5. A freely falling ball travels 2.9 m in 1st second, 12.7 m in 2nd second, 22.5 m in 3rd second, and so on. This data shows that the motion of a freely falling object is a case of (a) Uniform motion (b) Uniform acceleration (c) Variable acceleration (d) Uniform velocity None 6. Identify the correct statement. (a) Speed of a moving body is always smaller than its velocity (b) Speed of a moving body is always higher than its velocity. (c) Speed of moving body is its velocity in a given direction. (d) Velocity of a moving body is its speed in a given direction. None 7. Which of the following quantities can be zero for a moving object? (a) Average velocity (b) Distance travelled (c) Average speed (d) Speed None 8. None 9. Which of the following pairs is a pair of vector quantities? (a) Velocity and speed (b) Velocity and acceleration (c) Acceleration and speed (d) Acceleration and distance None 10. Which of the following quantities can be obtained from the slope of velocity-time graph? (a) Distance (b) Displacement (c) Velocity (d) Acceleration None 11. The diagram given below shows distance time graph, where t1 and t2 are time intervals and s1 and s2 are distances covered at points A and B. The speed, v of the object, can be represented as (a) v= s1 – s2/t1 – t2 (b) v = s2 – s1/t2 – t1 (c) v = s1 – s2/t2 – t1 (d) v = s2 – s1/t1 – t2 None 12. A truck of mass 5000 kg is moving with a velocity of 15 m/s. The velocity-time graph for this truck is shown in the image below. The velocity of truck at the end of 25s will be: (a) 10 m/s (b) 15 m/s (c) 20 m/s (d) 25 m/s None 13. The graph given below shows the speed-time graph for a moving object. The region _________ indicates positive acceleration of the object. (a) PQ (b) QR (c) RS (d) ST None 14. The distance-time graph for a moving scooter for a particular period of time is a horizontal line parallel to the time axis. Which of the following conclusions is correct about this section of the graph? (a) The scooter has uniform velocity in this section. (b) The distance travelled by scooter is the maximum in this section. (c) The scooter has uniform acceleration in this section. (d) The distance travelled by the scooter is zero in this section. None 15. Identify the correct statement. (a) During uniform motion of an object along a straight line, the change in velocity of the object for any time interval is negative. (b) During uniform motion of an object along a straight line, the change in velocity of the object for any time interval is zero. (c) During non-uniform motion of an object along a straight line, the change in velocity of the object for any time interval is zero. (d) During uniform motion of an object along a straight line, the change in velocity of the object for any time interval is more than zero. None 16. A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 ms2. After 4 seconds, its speed will be (a) 8 m/s (b) 36 m/s (c) 28 m/s (d) 12 m/s None 17. Assertion (A): Displacement of an object can be greater than the distance travelled by the object. Reason (R): Displacement is the shortest distance between the initial and final position. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true and R is NOT the correct explanation of A (c) A is true but R is false (d) A is false but R is true None 18. Assertion (A): The hands of a clock are in uniform motion. Reason (R): In uniform motion, an object covers equal distances in equal intervals of time. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true and R is NOT the correct explanation of A (c) A is true but R is false (d) A is false but R is true None 19. Assertion (A): The S.I. unit of acceleration is m2/s2 Reason (R): Acceleration is defined as the rate of change of velocity with time. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true and R is NOT the correct explanation of A (c) A is true but R is false (d) A is false but R is true None 20. Assertion (A): The velocity-time graph for an object in uniform motion is a straight line parallel to velocity axis. Reason (R): In uniform motion, an object covers equal distances in equal intervals of time. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true and R is NOT the correct explanation of A (c) A is true but R is false (d) A is false but R is true None 21. Assertion (A): Uniform circular motion is an example of accelerated motion. Reason (R): The magnitude of velocity is continuously changing in the case of uniform circular motion. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true and R is NOT the correct explanation of A (c) A is true but R is false (d) A is false but R is true None 1 out of 2 Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment * Save my name, email, and website in this browser for the next time I comment.