JEE Main Physics question

PhysicsSystems of Particles and Rotational MotionJEE Main

A particle of mass m moving with velocity v strikes a stationary particle of mass 2m and sticks to it. The speed of the system will be

Answer: (C)

Solution

By momentum conservation: mv = (m+2m)V ⟹ V = v/3.

Question ID VK-154132