4/20 Billiard ball A is moving in the y-direction with a velocity of 2 m/s when it strikes ball B of identical size and mass initially at rest. Following the

impact, the balls are observed to move in the directions shown.Calculate the velocities va and vg which the ball shave immediately after the impact. Treat the balls as particles and neglect any friction forces acting on the balls compared with the force of impact.

Fig: 1

Fig: 2