A ball strikes a horizontal floor at `45^(@)`. 25% of its kinetic energy is lost in collision. Find the cofficient of resultation

Options

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

Explanation

`((1)/(2)mU^(2)-(1)/(2)mV^(2))/((1)/(2)mU^(2))=(1)/(4)rArrV=Usqrt((3)/(4))`
`V=sqrt((3)/(4))U=[((U)/sqrt(2))^(2)+((eU)/sqrt(2))^(2)]^(1//2)`
`e=(1)/sqrt(2)`