A particle strikes elastically with another particle with velocity V after collision its move with half the velocity in the same direction find the velocity of the second particle if it is initially at rest

A sphere of mass 2 kg moving with a velocity collides elastically with another sphere which is at rest. If after the collision, the first sphere moves in the same direction with its velocity reduced to one third of its initial velocity, find the mass of the second sphere.

A particle of mass m_1 moves with velocity v_1 and collides with another particle at rest of equal mass. The velocity of the second particle after the elastic collision is

Two particle moving in the same direction with speeds 4 m//s and 2m//s collide elastically (the collision being head on). After collision , the velocity of first particle becomes 3 m//s in the same direction . The velocity of the second should be

A particle of mass m moving with velocity vecV makes a head on elastic collision with another particle of same mass initially at rest. The velocity of the first particle after the collision will be