Newton's Laws of Motion NDA Questions

NDA Physics

Newton's Laws of Motion MCQ Questions


1.
If the mass of an object is tripled while the force acting on it remains constant, what happens to its acceleration?
A.
It is tripled
B.
It is halved
C.
It remains the same
D.
It is quadrupled
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ANSWER :
B. It is halved
2.
When a tennis player hits a ball with a racket, the force exerted by the racket on the ball is equal in magnitude and opposite in direction to the force exerted by the ball on the racket This illustrates:
A.
Newton's first law
B.
Newton's second law
C.
Newton's third law
D.
None of the above
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ANSWER :
C. Newton's third law
3.
According to Newton's laws of motion, what happens to the motion of an object if the net force acting on it is zero?
A.
The object accelerates
B.
The object decelerates
C.
The object moves with constant velocity
D.
The object comes to rest
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ANSWER :
C. The object moves with constant velocity
4.
If the force acting on an object is doubled, and its mass remains constant, what happens to its acceleration?
A.
It is halved
B.
It is doubled
C.
It remains the same
D.
It is quadrupled
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ANSWER :
B. It is doubled
5.
Which of the following scenarios best illustrates Newton's second law of motion?
A.
A book sitting on a table
B.
A feather falling slowly to the ground
C.
A car accelerating from rest
D.
A satellite orbiting the Earth
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ANSWER :
B. A feather falling slowly to the ground
6.
According to Newton's third law of motion, if object A exerts a force on object B, what is the reaction?
A.
Object A experiences a force in the opposite direction
B.
Object B experiences a force in the opposite direction
C.
Object A experiences a force in the same direction
D.
Object B experiences a force in the same direction
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ANSWER :
B. Object B experiences a force in the opposite direction