Newton's Laws of Motion NDA Questions

NDA Physics

Newton's Laws of Motion MCQ Questions


7.
Which of Newton's laws explains why it is necessary to wear a seatbelt in a moving car?
A.
Newton's First Law
B.
Newton's Second Law
C.
Newton's Third Law
D.
All of the above
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ANSWER :
A. Newton's First Law
8.
If a car crashes into a wall, what exerts the force that causes the car to stop?
A.
The wall
B.
The car's engine
C.
The ground
D.
Friction between the tires and the road
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ANSWER :
A. The wall
9.
An astronaut in space throws a hammer away from the spaceship According to Newton's third law, what happens to the astronaut?
A.
The astronaut moves in the opposite direction of the hammer's motion
B.
The astronaut remains at rest
C.
The astronaut moves in the same direction as the hammer's motion
D.
The astronaut is unaffected by the hammer's motion
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ANSWER :
A. The astronaut moves in the opposite direction of the hammer's motion
10.
If a hockey puck slides across the ice with a constant velocity, which statement best reflects Newton's laws of motion?
A.
There is no force acting on the puck
B.
The force on the puck is equal to its mass
C.
The force on the puck is equal to its acceleration
D.
The force on the puck is greater than its mass
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ANSWER :
A. There is no force acting on the puck
11.
Which of the following is an example of Newton's third law of motion?
A.
A rocket accelerating in space
B.
A car skidding to a stop
C.
A person jumping off a diving board
D.
A balloon being inflated and released, flying around the room
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ANSWER :
D. A balloon being inflated and released, flying around the room
12.
Which of Newton's laws states that the acceleration produced by a net force on an object is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object?
A.
Newton's First Law
B.
Newton's Second Law
C.
Newton's Third Law
D.
Newton's Law of Gravitation
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ANSWER :
B. Newton's Second Law