# NCERT Based MOTION Multiple Choice Question (MCQ) with PDF

Motion is one of the important chapter in physics for competitive examination. NCERT based Motion and Friction chapter also included in class 8, class 9, class 10, class 11, class 12. If you are finding MCQ Questions of Motion and Friction on NCERT based. You can also Download Motion MCQ Questions PDF from here.

## NCERT Based MOTION Multiple Choice Question (MCQ) with PDF

1. A passenger falls in the direction when a moving bus applies brakes to stop and falls backwards when it accelerates from rest. This is because of __

[A] force
[B] displacement
[C] inertia
[D] momentum

2. The displacement-time (s-t) graph of a particle acted upon by a constant force is__

[A] a straight line
[B] a circle
[C] a parabola
[D] any curve depending initial conditions

Correct Answer : [C] a parabola

[A] inertia of motion
[B] frictional force
[C] moment of a force
[D] principle of moments

Correct Answer : [A] inertia of motion

4. Which one of the following is not a contact force?

[A] push force
[B] gravitational force
[C] frictional force
[D] strain force

Correct Answer : [B] gravitational force

5. When a running car stops suddenly, the passengers tend to lean forward because of __

[A] centrifugal force
[B] inertia of rest
[C] inertia of motion
[D] gravitational force

Correct Answer : [C] inertia of motion

6. The known forces of nature can be divided into four classes, viz, gravity, electromagnetism, weak nuclear force and strong nuclear force.  With reference to them, which one of the following statements is not correct?

[A] gravity is the strongest of the four
[B] electromagnetism acts only one particle with an electric charge
[C] weak nuclear force causes radio activity
[D] strong nuclear force holds protons and neutrons inside the nucleus of an atom6.

Correct Answer : [A] gravity is the strongest of the four

7. Which one of the following has maximum inertia?

[A] an atom
[B] a molecule
[C] a one rupee coin
[D] a cricket ball

Correct Answer : [D] a cricket ball

8. Which of the following quantity is a measure of inertia?

[A] velocity
[B] acceleration
[C] mass
[D] weight

9. The tendency of undisturbed objects to stay at rest or to keep moving with same velocity is called?

[A] velocity
[B] force
[C] momentum
[D] inertia

10. The inertia of an objects tends to cause the object?

[A] to increase its speed
[B] to decrease its speed
[C] to resist any change in its state of motion
[D] to decelerate due to friction

Correct Answer : [C] to resist any change in its state of motion

11. A body lying at rest suddenly breaks into two parts of equal masses which start moving. The two parts will move in

[A] opposite direction with equal speed
[B] same direction with equal speed
[C] any direction with equal speed
[D] opposite direction with unequal speed

Correct Answer : [A] opposite direction with equal speed

12. On which one of the following conservation laws, does a rocket work ?

[A] mass
[B] energy
[C] linear momentum
[D] angular momentum

Correct Answer : [C] linear momentum

13. Two bodies A and B are moving with equal velocities. The mass of B is doubled that of A. In this context, which one of the following statements is correct ?

[A] momentum of B will be doubled that of A
[B] momentum of A will be double that of B
[C] momentum of B will be four times that of A
[D] momentum of both A and B will be equal

Correct Answer : [A] momentum of B will be doubled that of A

14. A body of mass 8 kg is moving with a velocity of 4 m/s, Find it’s momentum.

[A] 2
[B] 64
[C] 32
[D] 4

15. When a ball bounces of the ground, which of the following changes suddenly (assume no loss of energy to the flour)?

[A] its speed
[B] its momentum
[C] its kinetic energy
[D] its potential energy

Correct Answer : [B] its momentum

16. Linear momentum equal to?

[A] mass x velocity
[B] speed x weight
[C] force x height
[D] mass x volume

Correct Answer : [A] mass x velocity

17. A batsman hits a cricket ball which than rolls on a level ground. After covering a short distance, the balls comes to rest. The balls slew to stop because ?

[A] the batsman did not hit the ball hard enough
[B] velocity is proportional to the force exerted on the ball
[C] there is force on the ball opposing the motion
[D] there is no unbalanced force on the ball, would try to come to rest

Correct Answer : [C] there is force on the ball opposing the motion

18. A particle moving with constant speed along a straight line path. A force is not required to

[A] increase its speed
[B] decrease the momentum
[C] change the direction
[D] keep it moving with uniform velocity

Correct Answer : [D] keep it moving with uniform velocity

19. Newton’s laws of motion do not hold good for objects

[A] at rest
[B] moving slowly
[C] moving with high velocity
[D] moving with velocity comparable to velocity of light

Correct Answer : [D] moving with velocity comparable to velocity of light

20. Newton’s first law is known as ______ ?

[A] law of friction
[B] law of momentum
[C] law of inertia
[D] law of motion

Correct Answer : [C] law of inertia

21. A metal ball and a rubber ball of the same mass are drop from the same height. After hitting the floor, the rubber ball rises the higher than the metal ball, why ?

[A] momentum is not conserved when the metallic ball hits the floor
[B] the rubber ball hits the floor with greater velocity
[C] momentum is not conserved when the rubber ball hits the floor
[D] none of the above

Correct Answer : [D] none of the above

22. A shell of mass 0.04 kg is fired by a gun of mass 120 kg. If the muzzle speed of the is 90 m/s. What is recoil speed of the gun?

[A] 3 x 102 m/s
[B] -3 x 10-2 m/s
[C] 0.3 m/s
[D] 3 x 10-3 m/s

Correct Answer : [B] -3 x 10-2 m/s

23. The product of mass of a body and the acceleration produced it equal the ____ acting on it?

[A] force
[B] impulse
[C] torque
[D] kinetic energy

24. Definition of force can be started from?

[A] Newton’s first law of Motion
[B] Newton’s second law of Motion
[C] Newton’s third law of Motion
[D] Newton’s law of Gravitation

Correct Answer : [B] Newton’s second law of Motion

25. Acceleration is?

[A] inversely proportion to force
[B] inversely proportional to mass
[C] directly proportional to mass
[D] directly proportional to force

Correct Answer : [D] directly proportional to force

26. When an object is stationary, then the force is still acting on it is?

[A] acceleration
[B] momentum
[C] impulse
[D] weight

27. In SI unit of force ‘newton’ (N) is given by (where, ‘kg’ stands for ‘kilogram’, ‘m’ stands for ‘metre’ and ‘s’ stands for ‘second’)?

[A] 1 N = 2 kg-ms2
[B] 1 N = 1 kg-ms-2
[C] 1 N = 4 kg-ms-2
[D] 1 N = 3 kg-ms-2

Correct Answer : [B] 1 N = 1 kg-ms-2

28. When a force of 1 N acts on a mass of 1 kg, which is able to move freely, the object moves in the direction of force with a/an

[A] speed of 1 kg/s
[B] acceleration of 1 m/s2
[C] speed of 1 m/s
[D] acceleration of 1 km/s2

Correct Answer : [B] acceleration of 1 m/s2

29. The rate of change of momentum of a body is equal to the resultant

[A] energy
[B] power
[C] force
[D] impulse

30. According to the second law of motion, for a given force, acceleration is inversely proportional to the ________ of an object.

[A] density
[B] volume
[C] force
[D] mass