JEE MAIN - Physics (2023 - 31st January Evening Shift - No. 26)
A ball is dropped from a height of $20 \mathrm{~m}$. If the coefficient of restitution for the collision between ball and floor is $0.5$, after hitting the floor, the ball rebounds to a height of ________ $\mathrm{m}$.
Answer
5
Explanation
We know, $h^{\prime}=e^{2} h$
$h^{\prime}=(0.5)^{2} \times 20 m=5 m$
$h^{\prime}=(0.5)^{2} \times 20 m=5 m$
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