A white billiard ball with mass m w = 1.25 kg is moving directly to the right wi

Question

A white billiard ball with mass mw = 1.25 kg is moving directly to the right with a speed of v = 3.19 m/s and collides elastically with a black billiard ball with the same mass mb = 1.25 kg that is initially at rest. The two collide elastically and the white ball ends up moving at an angle above the horizontal of ?w = 26

A white billiard ball with mass mw = 1.25 kg is moving directly to the right with a speed of v = 3.19 m/s and collides elastically with a black billiard ball with the same mass mb = 1.25 kg that is initially at rest. The two collide elastically and the white ball ends up moving at an angle above the horizontal of ?w = 26 degree and the black ball ends up moving at an angle below the horizontal of ?b = 64 degree.

Explanation / Answer

Conservation of momentum:

In x-direction:

1.25

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