A particle of mass `m` and momentum `p` moves on a smooth horizontal table and collides
Channel: Doubtnut
Date: 12/07/2020

A particle of mass `m` and momentum `p` moves on a smooth horizontal table and collides directly and elastically with a similar particle (of mass m) having momentum `-2p`. The loss `(-)` or gain `(+)` in the kinetic energy of the first particle in the collision is