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

Options

A. `1//2`
B. `(1)/(sqrt(2))`
C. `((1)/(sqrt(2)))^(1//2)`
D. `((1)/(sqrt(2)))^(1//4)`

Answer

B

Explanation

`e=sqrt((h_(2))/(h_(1))) = sqrt((.^h//_(2))/(h)) = (1)/(sqrt(2))`.