Work-Energy Theorem NEET Questions

Physics - Work, Energy, and Power

Work-Energy Theorem MCQ Questions


13.
If the work done on an object is zero, what can be said about its kinetic energy?
A.
It remains the same
B.
It decreases
C.
It increases
D.
It becomes zero
😑 View Answer Rough Work Error
ANSWER :
A. It remains the same
14.
A body of mass 2 kg is initially at rest. If a force of 10 N is applied to it for 2 seconds, the final kinetic energy of the body is:
A.
50 J
B.
100 J
C.
150 J
D.
200 J
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ANSWER :
B. 100 J
15.
A block of mass 5 kg is moving with a velocity of 6 m/s. The force required to stop it over a distance of 3 m is:
A.
15 N
B.
30 N
C.
60 N
D.
75 N
😑 View Answer Rough Work Error
ANSWER :
C. 60 N
16.
Which of the following correctly explains the work-energy theorem?
A.
Work done by all forces is equal to the change in kinetic energy
B.
Work done by conservative forces is equal to change in potential energy
C.
Work done by friction is always positive
D.
Work done by a force is independent of displacement
😑 View Answer Rough Work Error
ANSWER :
A. Work done by all forces is equal to the change in kinetic energy
17.
A block of mass 2 kg is pushed against a wall by a force of 40 N. If the coefficient of static friction between the block and the wall is 0.5, the work done by the force to move the block by 0.2 m along the wall is:

NEET - 2017

A.
8 J
B.
4 J
C.
0 J
D.
16 J
😑 View Answer Rough Work Error
ANSWER :
A. 8 J
18.
A particle moves with constant velocity. What is the net work done on it?
A.
Positive
B.
Negative
C.
Zero
D.
Infinite
😑 View Answer Rough Work Error
ANSWER :
C. Zero