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. Rocket works on the principle of conservation of

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. 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
 
 
 
 

6. 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)

 
 
 
 

7. 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

 
 
 
 

8. 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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. The incorrect option regarding action-reaction pair is

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. 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

 
 
 
 

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

 
 
 
 

19. Impulse is the other name of

 
 
 
 

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

 
 
 
 

21.

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

 
 
 
 

22. 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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 

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

 
 
 
 

28. 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

 
 
 
 

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

 
 
 
 

30. 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.

 
 
 
 

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