Force and Inertia, Newton’s First Law of Motion; Momentum, Newton’s Second Law of Motion, Impulses; Newton’s Third Law of Motion NEET Questions

Physics - Laws of Motion

Force and Inertia, Newton’s First Law of Motion; Momentum, Newton’s Second Law of Motion, Impulses; Newton’s Third Law of Motion MCQ Questions


13.
The rate of change of momentum of a body is equal to:
A.
Velocity
B.
Acceleration
C.
Force
D.
Displacement
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ANSWER :
C. Force
14.
Newton’s Second Law provides the definition of:
A.
Momentum
B.
Force
C.
Inertia
D.
Work
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ANSWER :
B. Force
15.
A block of mass 2 kg is placed on a rough inclined plane of inclination 30°. A force of 5 N is applied on the block parallel to the incline in the upward direction. If the coefficient of friction between the block and the incline is 0.2, the acceleration of the block is: (Take g = 10 m/s²)

NEET - 2019

A.
0.5 m/s²
B.
1 m/s²
C.
1.5 m/s²
D.
2 m/s²
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ANSWER :
B. 1 m/s²
16.
When a moving bus suddenly stops, passengers tend to fall forward due to:
A.
Momentum
B.
Inertia
C.
Force
D.
Friction
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ANSWER :
B. Inertia
17.
An impulse is equal to:
A.
Change in momentum
B.
Change in velocity
C.
Change in energy
D.
Change in mass
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ANSWER :
A. Change in momentum
18.
The SI unit of impulse is:
A.
Joule
B.
Newton
C.
Newton-second
D.
kg·m/s²
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ANSWER :
C. Newton-second