Mechanics AFCAT Questions

AFCAT Physics

Mechanics MCQ Questions


7.
A force of 10 N acts on a body of mass 2 kg. The acceleration produced is:
A.
10 m/s²
B.
5 m/s²
C.
2 m/s²
D.
20 m/s²
😑 View Answer Rough Work Error
ANSWER :
B. 5 m/s²
8.
A bullet of mass 20 g moving with a velocity of 500 m/s strikes a target and is brought to rest in 0.01 s. The average force exerted on the target is:
A.
500 N
B.
2000 N
C.
100 N
D.
1000 N
😑 View Answer Rough Work Error
ANSWER :
D. 1000 N
9.
Newton's Second Law of Motion gives the measure of:
A.
Inertia
B.
Force
C.
Acceleration
D.
Momentum
😑 View Answer Rough Work Error
ANSWER :
B. Force
10.
If the momentum of a body is doubled, its kinetic energy becomes:
A.
Four times
B.
Same
C.
Half
D.
Double
😑 View Answer Rough Work Error
ANSWER :
A. Four times
11.
A force F acts on a body of mass m for time t. The change in momentum is:
A.
F·t·m
B.
Ft
C.
F/(mt)
D.
F/t
😑 View Answer Rough Work Error
ANSWER :
B. Ft
12.
A rocket works on the principle of:
A.
Newton's First Law
B.
Conservation of momentum
C.
Conservation of energy
D.
Conservation of mass
😑 View Answer Rough Work Error
ANSWER :
B. Conservation of momentum