Question

3.
A proton of mass m, collides with a heavy particle.
After collision proton bounces back with
of its
initial kinetic energy. Collision is perfectly elastic.
Find mass of heavy particle.
(1) 5 m (2) 6 m (3) 3 m (4) 1.5 mp​

Answer 1

Answer:

answer is option(4)1.5mp