Coefficient of Restitution :: Discussion


3.Which of the following is an example for a force which does work on a body but fails to change its kinetic energy?
A.A body pulled through a plain surface
B.A body pulled through a vertical surface
C.A body pulled through a horizontal surface
D.A body at rest
Answer:  Option  C
Explanation:

When a body is pulled through a rough horizontal surface with constant velocity, work is done by the applied force on the body but the kinetic energy of the body remains unchanged.

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Published by:Michael Daani

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