Dynamics – Online MCQs Test – Physics 9th

1. Quantity of motion contained in a body is called:

2. The S.I unit of force is:

3. It is a force acting on an object at rest that resists its ability to start moving.

4. Centrifugal force is always directed:

5. It is resistance to change the state of a body.

6. It is inversely proportional to mass of body.

7. These are always parallel to the plane of contact between two surfaces and opposite to the direction of the applied force.

8. Static friction is greater than:

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

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

11. The acceleration is directly proportional to:

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

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

14. The centripetal force is equal to:

15. Which equation represents the momentum?

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

17. The maximum static friction is known as:

18. 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?

19. When a bus starts moving the passengers feel a:

20. Momentum is equal to the: