A moving particle of mass m makes a head on elastic collision with a particle of mass 2m which is - Physics - Wave Optics

Question

A moving particle of mass m makes a head on elastic collision with
a particle of mass 2m which is initially at rest The fraction of
the initial kinetic energy lost by the colliding particle is

Shivam Swami · Accepted Answer

regards

A moving particle of mass m makes a head on elastic collision with a particle of mass 2m which is initially at rest. The fraction of the initial kinetic energy lost by the colliding particle is