A hollow smooth uniform `A` of mass 'm' rolls without sliding on a smooth horizontal
Channel: Doubtnut
Date: 16/08/2020

A hollow smooth uniform `A` of mass 'm' rolls without sliding on a smooth horizontal surface collides head to elastically with another stationary smooth solid sphere `B` of the same mass `m` and same radius. The ratio of kinetic energy of 'B' to that of 'A' just after the collision is -