Two particles of different masses collide head on. Then for the system

Two balls of different masses collide head on . After the collision, the ball sremain at rest, and no external force act on them. Which statements is true about the speed of the balls before at the collision ?

Two particles each of mass m, collide head on when their speeds are 2u and u. If they stick to each other on impact, when moving in opposite directions, their combined speed is

Two particles are seen to collide and move jointly together after the collision . During such a collision, for the total system,

Two particles are seen to collide and move jointly together after the collision . During such a collision, for the total system,

Two bodies of masses 3 kg and 2 kg collide head-on. Their relative velocities before and after collision are 15 m/s and 5 m/s respectively. The loss of kinetic energy of the system is

Two bodies of masses 3 kg and 2 kg collide head-on. Their relative velocities before and after collision are 15 m/s and 5 m/s respectively. The loss of kinetic energy of the system is

A particle of mass m_(1) collides head on with a stationary particles of mass m_(2) . If (m_(1))/(m_(2)) gte, where e is the coefficient of restitution, then :