Force and Momentum NDA Questions

NDA Physics

Force and Momentum MCQ Questions


13.
Which of the following statements is true regarding the direction of impulse and change in momentum?
A.
The direction of impulse is always opposite to the direction of change in momentum
B.
The direction of impulse is always perpendicular to the direction of change in momentum
C.
The direction of impulse is always the same as the direction of change in momentum
D.
The direction of impulse is independent of the direction of change in momentum
😑 View Answer Rough Work Error
ANSWER :
A. The direction of impulse is always opposite to the direction of change in momentum
14.
What is the impulse experienced by a 60 kg skater who applies a force of 200 N to stop in 2 seconds?
A.
600 Ns
B.
1200 Ns
C.
2400 Ns
D.
4800 Ns
😑 View Answer Rough Work Error
ANSWER :
B. 1200 Ns
15.
Which of the following factors affect the magnitude of the impulse experienced by an object?
A.
Magnitude of force and duration of time
B.
Mass of the object and its velocity
C.
Distance traveled by the object and its weight
D.
Density of the object and its shape
😑 View Answer Rough Work Error
ANSWER :
A. Magnitude of force and duration of time
16.
If the mass of an object is halved, what happens to its momentum, assuming its velocity remains constant?
A.
It doubles
B.
It is halved
C.
It quadruples
D.
It remains the same
😑 View Answer Rough Work Error
ANSWER :
B. It is halved
17.
What is the momentum of a 15 kg object moving at a velocity of 6 m/s?
A.
9 kg m/s
B.
21 kg m/s
C.
90 kg m/s
D.
36 kg m/s
😑 View Answer Rough Work Error
ANSWER :
C. 90 kg m/s
18.
Which of the following is a correct expression for impulse?
A.
Impulse = Force / Time
B.
Impulse = Force × Time
C.
Impulse = Momentum / Time
D.
Impulse = Mass × Acceleration
😑 View Answer Rough Work Error
ANSWER :
B. Impulse = Force × Time