Ball A of mass m strickes a stationary ball B of mass M and undergoes an elastic collision. After collision ball A has a speed one third of its initial speed. The ratio of M/m is

Ball A of mass m strickes a stationary ball B of mass M and undergoes an elastic collision. After collision bill A has a speed one third of its initial speed. The ratio of M/m is

A ball A of mass 0.2 strikes another ball B of unknown mass at rest . If the ball A makes an elastic head on collision and then rebounds at one half of its original speed , then calculate the mass of ball B .

A ball P of mass 2kg undergoes an elastic collision with another ball Q at rest. After collision, ball P continues to move in its original direction with a speed one-fourth of its original speed. What is the mass of ball Q ?

A body of mass m_(1) moving at a constant speed undergoes an elastic head on collision with a body of mass m_(2) initially at rest. The ratio of the kinetic energy of mass m_(1) after the collision to that before the collision is -

A ball of 0.1 kg makes an elastic head on collision with a ball of unknown mass that is initially at rest. If the 0.1kg ball rebounds at one third of its original speed, what is the mass of the other ball?

A ball 'A' of mass 'm' moving along positive x-direction with kinetic energy K and linear momentum "p" undergoes elastic head on collision with a stationary ball 'B' of mass M . After the collision, the ball A moves along negative x-direction with kinetic energy K//9 , the final linear momentum of the ball B is

A ball of mass 4 kg moving on a smooth horizontal surface makes an elastic collision with another ball of mass m at rest in the line of motion of first ball. If after collision first ball moves in the same direction with one fourth of its velocity before collision, then mass of second ball is

A ball of mass 1kg moving with a velocity of 15m // s undergoes a head on elastic collision with another ball of unknown mass at rest, and rebound with a velocity of 10m//s . What is the mass of the other ball?

Two balls of equal masses m each undergo oblique collision. If colision is perfectly elastic, then angle between their velocities after collision is