The solid rubber balls A and B having masses 200 and 400 gm respectively are moving in opposite directions with velocity of A equal to 0.3 m / s . After collision the two balls come to rest, then the velocity of B is

Two balls A and B of masses 0.3 kg and 0.2 kg respectively are moving along positive X-axis and negaive X-axis with velocities 2.0 m // s. They collide and thereafter move in the directions opposite to their original directions. Find the velocities of A and B after collision. Also, calculate total K.E. of the ball before and after collision.

Two balls of masses m and 2m moving in opposite directions collide head on elastically with velocities v and 2v . Find their velocities after collision.

Two balls A and B having masses 1 kg and 2 kg, moving with speeds 21 m/s and 4 m/s respectively in opposite direction, collide head on. After collision A moves with a speed of 1 m/s in the same direction, then the coefficient of restitution is

Two identical balls A and B having velocity of 0.5 m//s and -0.3 m//s respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be

Two identiacal balls A and B having velocities of 0.5 m/s and 0.3" m"//"s" respectively collide elastically in one dimension. The velocities of B and A after the collision respectively will be

Two particles of mass m and 2 m moving in opposite directions collide elastically with velocities v and 2v. Find their velocities after collision.