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A body of mass 4m at rest explodes into ...

A body of mass 4m at rest explodes into three pieces. Two of the pieces each of mass m move with a speed v each in mutually perpendicular directions. The total kinetic energy released is

A

`1/2mv^2`

B

`mv^2`

C

`3/2mv^2`

D

`5/2mv^2`

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