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A body of mass m moving with velocity v ...

A body of mass `m` moving with velocity `v` collides head on with another body of mass `2 m` which is initially at rest. The ratio of K.E. of colliding body before and after collision will be

A

`4:1`

B

`9:1`

C

`2:3`

D

`5:4`

Text Solution

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The correct Answer is:
B
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