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Perfectly Elastic Collision

A bullet of m...

Question

A bullet of mass 'm' hits a target of mass M hanging by a string and gets embedded in it. If the block rises to a height h as a result of this collision, the velocity of the bullet before collision is

A

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B

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C

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D

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Solution

The correct option is C

If the initial velocity of bullet be v, then after collision combined velocity of bullet and target is

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