Q. 113.7( 10 Votes )
If the speed of a body is halved, what will be the change in its kinetic energy?
Answer :
Mass of the body, m = m
Velocity of the body, v = 
Hence, the new kinetic energy,
= 1/2 (m × v2/4)
= 1/8 mv2
Hence, the Kinetic energy would be reduced to one fourth the actual one.
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