A heavy truck moving with a velocity of `60 km//h` collides with a light drum at rest. If the collision is elastic, then the velocity of the drum immediately after collision will be

A body P moving with a velocity of 20kms^(-1) collides with another body of Q of the same mass at rest. After collision the velocity of Q if P comes to rest after collision is

A billiard ball of mass M , moving with velocity v_1 collides with another ball of the same mass but at rest . If the collision is elastic , the angle of divergence after the collision is

A proton moving with a velocity of 10^(6) m//s collides with a neutron at rest. If collision is prefectliy elastic, then after collsion, what are the velocities of porton and neutron?

A sphere of mass M,, moving with a velocity V0 collides head on with a stationary sphere of mass M. The collision is elastic. V1 and V2 are respectively their velocities immediately after collision.

A sphere of mass 0.3 kg moving with a velocity of 4 m/s collides with another sphere of mass 0.5 kg which is at rest. Assuming the collision to be elastic, their velocities after the impact are