1. Newton’s Second Law of Motion relates force to:
(A) Mass × Velocity
(B) Mass × Acceleration
(C) Energy × Time
(D) Power × Distance
2. The mathematical expression of Newton’s Second Law is:
(A) F = ma
(B) F = mv
(C) F = m/g
(D) F = E/t
3. According to the Second Law, acceleration is:
(A) Directly proportional to force
(B) Inversely proportional to mass
(C) Both A and B
(D) Neither A nor B
4. The SI unit of force is:
(A) Watt
(B) Pascal
(C) Newton
(D) Joule
5. One Newton is defined as:
(A) Force required to move 1 kg mass with 1 m/s velocity
(B) Force required to accelerate 1 kg mass at 1 m/s²
(C) Weight of 1 kg on Earth
(D) Work done in 1 second
6. If mass is doubled and force constant, acceleration will:
(A) Double
(B) Halve
(C) Remain same
(D) Become zero
7. If force is doubled and mass constant, acceleration will:
(A) Double
(B) Halve
(C) Remain same
(D) Decrease
8. Which physical quantity explains the “rate of change of momentum”?
(A) Work
(B) Energy
(C) Force
(D) Pressure
9. Momentum is the product of:
(A) Mass × Acceleration
(B) Mass × Velocity
(C) Force × Distance
(D) Work × Time
10. A force of 20 N acts on 5 kg body. Acceleration is:
(A) 1 m/s²
(B) 2 m/s²
(C) 4 m/s²
(D) 5 m/s²
11. The direction of acceleration is always:
(A) Opposite to force
(B) Same as force
(C) Random
(D) Perpendicular to force
12. If no net force acts, acceleration becomes:
(A) Zero
(B) Infinite
(C) Constant
(D) Random
13. Newton’s Second Law gives the definition of:
(A) Energy
(B) Power
(C) Force
(D) Work
14. Inertia is explained by Newton’s:
(A) First Law
(B) Second Law
(C) Third Law
(D) Law of Gravitation
15. The SI unit of momentum is:
(A) kg·m/s
(B) N·s
(C) Both A and B
(D) J·s
16. A truck and a car moving with same velocity, the truck has more momentum because:
(A) Less acceleration
(B) More mass
(C) More velocity
(D) Greater area
17. The impulse is equal to:
(A) Force × Velocity
(B) Force × Time
(C) Mass × Acceleration
(D) Power × Distance
18. Newton’s Second Law connects:
(A) Motion and acceleration
(B) Force and momentum
(C) Force and acceleration
(D) Mass and energy
19. Force is a vector quantity because it has:
(A) Only magnitude
(B) Only direction
(C) Both magnitude and direction
(D) No unit
20. If net external force on a body is zero, its momentum will:
(A) Increase
(B) Decrease
(C) Remain constant
(D) Become infinite
21. The relation F = ma was first introduced by:
(A) Newton
(B) Galileo
(C) Einstein
(D) Pascal
22. Acceleration produced in a body depends on:
(A) Mass of body
(B) Force applied
(C) Both A and B
(D) None
23. If two forces act on a body in the same direction, the net force is:
(A) Zero
(B) Sum of forces
(C) Difference of forces
(D) Average of forces
24. A bullet fired from a gun has high velocity because:
(A) Small mass, large force
(B) Large mass, small force
(C) Frictionless motion
(D) Gravity is absent
25. Which one is directly proportional to net external force?
(A) Acceleration
(B) Mass
(C) Momentum only
(D) Pressure
26. A ball of mass 2 kg accelerates at 3 m/s². Force applied is:
(A) 2 N
(B) 3 N
(C) 5 N
(D) 6 N
27. The rate of change of momentum is measured in:
(A) Joules
(B) Newtons
(C) Watts
(D) Pascal
28. Newton’s Second Law helps in calculation of:
(A) Mass only
(B) Energy only
(C) Force
(D) Pressure
29. The acceleration of a body is inversely proportional to:
(A) Force
(B) Mass
(C) Velocity
(D) Momentum
30. A rocket works on the principle of:
(A) First Law
(B) Second Law
(C) Third Law
(D) Gravitation
31. A 10 kg object requires a force of 50 N. Its acceleration is:
(A) 2 m/s²
(B) 4 m/s²
(C) 5 m/s²
(D) 10 m/s²
32. When a constant force is applied to a body, its acceleration:
(A) Increases continuously
(B) Decreases continuously
(C) Remains constant
(D) Becomes zero
33. If a moving object doubles its velocity, its momentum becomes:
(A) Half
(B) Double
(C) Triple
(D) Four times
34. A cricketer lowers his hand while catching a ball to:
(A) Reduce mass
(B) Reduce acceleration
(C) Reduce force by increasing time
(D) Reduce velocity
35. Force is directly proportional to:
(A) Rate of work
(B) Rate of change of momentum
(C) Rate of energy transfer
(D) Rate of displacement
36. Which of the following is not a unit of force?
(A) Dyne
(B) Newton
(C) Joule
(D) kg·m/s²
37. When a body is acted upon by force, it acquires:
(A) Speed only
(B) Velocity only
(C) Acceleration
(D) Inertia
38. If equal force is applied to objects of different masses, lighter object has:
(A) More acceleration
(B) Less acceleration
(C) Same acceleration
(D) Zero acceleration
39. The momentum of a stationary body is:
(A) Infinite
(B) Zero
(C) Constant
(D) Negative
40. Which is a scalar quantity?
(A) Force
(B) Acceleration
(C) Work
(D) Momentum
41. A force of 100 N produces acceleration of 20 m/s². Mass of body is:
(A) 2 kg
(B) 4 kg
(C) 5 kg
(D) 10 kg
42. Newton’s Second Law is consistent with which conservation principle?
(A) Energy
(B) Momentum
(C) Mass
(D) Charge
43. A 500 g mass has acceleration of 10 m/s². Force applied is:
(A) 1 N
(B) 2 N
(C) 3 N
(D) 5 N
44. The effect of force depends on:
(A) Mass and acceleration
(B) Only velocity
(C) Only momentum
(D) Only weight
45. A moving body resists deceleration due to:
(A) First Law
(B) Second Law
(C) Third Law
(D) Gravitation
46. Which of the following situations shows Newton’s Second Law?
(A) Kicking a football
(B) Book resting on a table
(C) Stone tied to string moving in circle
(D) Two objects colliding
47. If time of action of force is halved, impulse will:
(A) Double
(B) Halve
(C) Remain same
(D) Become zero
48. The product of mass and acceleration is called:
(A) Momentum
(B) Energy
(C) Force
(D) Work
49. When a cricket bat hits a ball, the ball accelerates according to:
(A) Law of Inertia
(B) Law of Acceleration
(C) Law of Reaction
(D) Gravitation
50. The SI unit of impulse is:
(A) Joule
(B) Watt
(C) Newton-second
(D) Pascal