A ball falls on the ground fro a height of 2.0 m and rebounds up to a height of 1.5 m. Find the coefficient of restitution.

Explanation

`u=sqrt(2gh)`
`=velocity on the ground
when ball approaches the ground
`rarr u=sqrt(2x9.8xx2)`
`v=velocity of ball when it `
separates from the ground
`v=eu`
`v=sqrt(2gh_2)`
`=sqrt(2xx9.8xx1.5)`
`or e=(sqrt(2xx9.8xx15.5))/(sqrt(2xx9.8xx2)=sqrt3/2`