A ball 'A' of mass 'm' moving along positive x-direction with kinetic energy 'K' and momentum P undergoes elastic head on collision with a stationary ball B of mass 'M'. After collision the ball A moves along negative X-direction with kinetic energy (K)/(9). Final momentum of B is

A ball 'A' of mass 'm' moving along positive x-direction with kinetic

1.	A ball 'A' of mass 'm' moving along positive x-direction with kinetic energy 'K' and momentum P undergoes elastic head on collision with a stationary ball B of mass 'M'. After collision the ball A moves along negative X-direction with kinetic energy (K)/(9). Final momentum of B is
Answer» <P>`P` `(P)/(3)` `(4P)/(3)` `4P` ANSWER :C