Dynamics – Online MCQs Test – Physics 9th

1. It is easier to push an empty shopping cart than a full one because the filled cart has more mass than the empty one. This can be expressed by:

2. Weigh of a body can be measured using a spring balance, it differs from place to place because of variation in __________.

3. Law of conservation of momentum defines that the total momentum of a system of two bodies before and after collision___________.

4. Centrifugal force is always directed:

5. The property of an object due to which it tends to continue its state of rest or motion is called:

6. It is inversely proportional to mass of body.

7. Friction opposes motion between two bodies in contact because of:

8. The S.I unit of momentum is:

9. A man pulls a crate of mass 25 kg across the leveled ground with a horizontal force of 60N. A constant force of friction of 20N acts on the sledge. What is the acceleration of the sledge?

10. The force required to move a body along a circular path is called:

11. It is the tendency of an object to leave the circular path and fly off in a straight line.

12. It is a self-adjusting force.

13. Newton’s First law of motion is also known as the law of:

14. Which equation represents the momentum?

15. The magnitude of a force can be measured using a:

16. The S.I unit of force is:

17. The acceleration is directly proportional to:

18. The momentum depends upon the:

19. It is very useful quantity when it comes to calculate what happens in collusion or explosion

20. Quantity of matter contained in body is called _____________.