Q11 of 146 Page 145

If the speed of a body is halved, what will be the change in its kinetic energy?

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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