A tennis ball bounces down a flight of s...

A tennis ball bounces down a flight of stairs, striking each step in turn and rebounding to half to height of the step. The coefficient of restitution is

`(1)/(2)`

`(1)/(sqrt2)`

`(1)/(4)`

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Verified by Experts

The correct Answer is:

Let h be the height of each step. Then
`e=(v)/(u)=(sqrt(2gh))/(sqrt(2g(2h)))=(1)/(sqrt2)`

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