A ball of mass m moving with a speed u_(1) collides elasticity with another identical ball moving with velocity u_(2). (a) Find the velocities of the balls after collision if the impact is direct. (b) Find the angle between velocities after collision if they collide obliquely and u_(2)=0

A ball of mass m moving with a speed u_(1) collides elasticity with an

1.	A ball of mass m moving with a speed u_(1) collides elasticity with another identical ball moving with velocity u_(2). (a) Find the velocities of the balls after collision if the impact is direct. (b) Find the angle between velocities after collision if they collide obliquely and u_(2)=0
Answer» ANSWER :(a) `v_(1)=u_(2),v_(2)=u_(1)`; (B) `(pi)/(2)`