A particle of mass `m_1` experienced a perfectly elastic collision with a stationary particle of
Channel: Doubtnut
Date: 2020-08-23

A particle of mass `m_1` experienced a perfectly elastic collision with a stationary particle of mass `m_2`. What fraction of the kinetic energy does the striking particle lose, if  (a) it recoils at right angles to its original motion direction, (b) the collision is a head-on one?