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A bullet of mass m(1) is fired into a la...

A bullet of mass `m_(1)` is fired into a large block of mass `m_(2) ` suspended form wires. The collision is perfeclty inelastic, so that the combined system swing throug a height h
(a) what si the initial speed of the bullect ?
(b) if the bullet emerged from the block with half of its initial velocity how high did the block swing ?

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