Billiard ball A is moving in the y-direction with a velocity of 2 m/s

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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 vB which the balls have immediately after the impact. Treat the balls as particles and neglect any friction forces acting on the balls compared with the force of impact.

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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

v_{A}

and

v_{B}

which the balls have immediately after the impact. Treat the balls as particles and neglect any friction forces acting on the balls compared with the force of impact.