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A 6.00 kg ball, A, moving at velocity 3.00 m/s due east collides with a 6.00...

A 6.00 kg ball, A, moving at velocity 3.00 m/s due east collides with a 6.00 kg ball, B, at rest. After the collision, A moves off at 40.0° N of E and ball B moves off at 50.0° S of E. What is the speed of the balls after the collision?

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