Two perfectly elastic balls of same mass m are moving with velocities u_(1)" and "u_(2). They collide elastically n times. The kinetic energy of the system finally is

Two perfectly elastic balls of same mass m are moving with velocities

1.	Two perfectly elastic balls of same mass m are moving with velocities u_(1)" and "u_(2). They collide elastically n times. The kinetic energy of the system finally is
Answer» `(1)/(2) (m)/(n) u_(1)^(2)` `(1)/(2) (m)/(n) (u_(1)^(2)+u_(2)^(2))` `(1)/(2) m(u_(1)^(2)+u_(2)^(2))` `(1)/(2) MN(u_(1)^(2)+u_(2)^(2))` Answer :C