In the previous problem , if the horizontal surface is rough with friction coefficient 0.5 and collision is elastic , head - on , the distance travelled by the block on the rough surface

In the previous problem , if the horizontal surface is rough with fric

1.	In the previous problem , if the horizontal surface is rough with friction coefficient 0.5 and collision is elastic , head - on , the distance travelled by the block on the rough surface
Answer» `5 m` `10 m` `15 m` `20 m` SOLUTION :After the HEAD - on COLLISION , velocities will be exchanged. `0 = v^() - 2 mu GD` `0 = 2gL - 2 mu gd` `d = (L)/(mu) = (5)/(1//2) = 10 m`