Question 257: Centre of Mass and Rotational Motion

Question

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 ________ $\mathrm{m}$.

Accepted Answer

We know, $h^{\prime}=e^{2} h$
$h^{\prime}=(0.5)^{2} 	imes 20 m=5 m$

Centre of Mass and Rotational Motion

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}.

Choose the correct answer: