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# Elastic collision

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A ball with mass M moving horizontally at 5m/s collides elastically with a block with mass 3M. The block is initially hanging at rest from the ceiling at the end of a .50m wire.

What is the maximum angle the block will swing after it is hit?

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This solution helps with a question about an elastic collision problem. Step by step solution provided.

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Please see the attached file for diagram.

Initial velocity of ball = 5 m/s
Initial velocity of block = 0
Let the velocity of the ball immediately after collision be V1 and that of the block be V2.

As the collision is elastic, the law of conservation of momentum and the law of conservation of kinetic energy will ...

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