Force and Momentum NDA Questions

NDA Physics

Force and Momentum MCQ Questions


7.
The law of conservation of momentum states that the total momentum of an isolated system:
A.
Increases with time
B.
Decreases with time
C.
Remains constant
D.
Becomes zero
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ANSWER :
C. Remains constant
8.
In a collision between two objects, if the total momentum before the collision is equal to the total momentum after the collision, it is known as a(n):
A.
Inelastic collision
B.
Elastic collision
C.
Explosive collision
D.
Impulsive collision
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ANSWER :
B. Elastic collision
9.
Momentum is defined as the product of an object's mass and its:
A.
Acceleration
B.
Velocity
C.
Force
D.
Displacement
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ANSWER :
B. Velocity
10.
When an object is in equilibrium, the sum of all forces acting on it is:
A.
Zero
B.
Infinity
C.
Increasing continuously
D.
Equal to its weight
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ANSWER :
A. Zero
11.
According to Newton's second law of motion, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its:
A.
Mass
B.
Velocity
C.
Density
D.
Volume
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ANSWER :
A. Mass
12.
What is the impulse experienced by a 100 kg person who jumps from a height of 2 meters and lands on the ground, coming to a stop in 05 seconds?
A.
200 Ns
B.
500 Ns
C.
1000 Ns
D.
50Ns
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ANSWER :
A. 200 Ns