Question
A ball dropped from a height of $4 \mathrm{~m}$ rebounds to a height of $2.4 \mathrm{~m}$ after hitting the ground. Then the percentage of energy lost is(A) 40(B) 50(C) 30(D) 600
Step 1
Step 1: The initial potential energy of the ball is given by $PE_{1} = mgh_{1}$, where $m$ is the mass of the ball, $g$ is the acceleration due to gravity, and $h_{1}$ is the initial height from which the ball is dropped. Show more…
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Round 2
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