The velocity vector of a sphere after it hits a vertical wall which is palle
Channel: Doubtnut
Date: 2020-01-19

The velocity vector of a sphere after it hits a vertical wall which is pallel to `hatj` is `(-hati + 3hatj)` on a smooth horizontal surface. The coefficient of restitution between ball and wall is `(1//2)`. Final the velocity vector of sphere immediately before collision.