Master Class 9 Science – Force and Laws of Motion with Our MCQ Mock Test!

Do you clearly understand how forces act, interact, and cause motion? Test your concepts with this MCQ-based mock test on Force and Laws of Motion, designed according to the latest Class 9 Science syllabus. This test covers all key topics — balanced and unbalanced forces, Newton’s three laws of motion, inertia, momentum, and their mathematical applications in real-life situations.

Each question is thoughtfully designed to enhance your conceptual clarity, boost analytical thinking, and prepare you for exam-level challenges. With this test, you’ll get a complete practice experience that helps improve accuracy, speed, and confidence before exams.

Attempt now and strengthen your understanding of Force and Laws of Motion – the foundation of Physics!

1. A plate, a ball and a child all have the same mass. The one having more inertia is the

 
 
 
 

2. The incorrect option regarding action-reaction pair is

 
 
 
 

3. Newton’s __________ law is called the real law of motion.

 
 
 
 

4. On a 3 kg mass, 5 newton of force acts for 0.1 second. The impulse imparted to the mass is (in kg m/s)

 
 
 
 

5. Water drops sticking to the wheel come out along the tangential line due to

 
 
 
 

6. While catching a stone thrown by your friend you pull the hands back to

 
 
 
 

7. A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is

 
 
 
 

8. A ball of mass m hitting the ground with a velocity u, bounces back with a velocity v in a small time interval ‘t’, the force exerted on the ground is

 
 
 
 

9. Two equal masses m each moving in the opposite direction with the same speed v collide and stick to each other. The velocity of the combined mass is

 
 
 
 

10. One can move a body with constant speed on a rough surface with frictional force F by applying a force of

 
 
 
 

11. Bags at the top of a school van are tied using a string to avoid the effect of

 
 
 
 

12. The one which has the least inertia among the following

 
 
 
 

13. A mass M breaks into two pieces in the ratio 1 : 3 while at rest. If the heavier has a speed of v, the speed of the lighter is

 
 
 
 

14. A water tanker filled up to rd of its height is moving with a uniform speed. On sudden application of the brake, the water in the tank would

 
 
 
 

15. Calculate the change in momentum of a body weighing 5 kg when its velocity decreases from 20 m/s to 0.20 m/s.

 
 
 
 

16. An object of mass 2 kg is sliding with a constant velocity of 4 ms–1 on a frictionless horizontal table. The force required to keep the object moving with the same velocity is

 
 
 
 

17. The v – t graph of a body of 5 kg moving with the help of a force is shown. Then the force involved is

 
 
 
 

18. Impulse is the other name of

 
 
 
 

19. Which of the following does not happen? As an automobile accelerates suddenly,

 
 
 
 

20. A body of mass 9 kg is lying on a surface of table. Calculate the net force acting on it.

 
 
 
 

21. A force of 20 N changes the position of a body. If mass of the body is 2 kg, find the acceleration produced in the body.

 
 
 
 

22. If force, change in momentum and time are given by F, p and t respectively, then they are related by

 
 
 
 

23. Action and reaction forces act on the same body. [True/False]

 
 

24. When no external force acts on an object, the physical quantity that remains conserved is

 
 
 
 

25. Rocket works on the principle of conservation of

 
 
 
 

26. The two states of motion treated alike by the Newton’s first law, among A, B, C and D are

A : Rest
B : Uniform motion
C : Uniformly accelerated
D : Non-uniformly accelerated
 
 
 
 

27.

A ball of mass 500 g is thrown upwards with a velocity of 15 ms–1. Calculate its momentum at the highest point.

 
 
 
 

28. When a 12 N force acts on 3 kg mass for a second, the change in velocity is (in m/s)

 
 
 
 

29. The minimum number of unequal forces that can make zero resultant is

 
 
 
 

30. According to second law of Newton, force is the cause and the outcome is

 
 
 
 

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