Question

A body is dropped from a height of 20m and rebounds to a height 10m. The loss of energy is(a) 10%(b) 45%(c) 50%(d) 75%

Answer 1

energy = mgh

initial height is 2 times final height so 50 percent loss

Answer 2

Answer:

50%

Explanation:

initial height is 2 times of final height so 50%loss