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A 12 kg bomb at rest explodes into two p...

A 12 kg bomb at rest explodes into two pieces of 4 kg and 8 kg. If the momentum of 4 kg piece is 20 Ns, the kinetic energy of the 8 kg piece is

A

`25" J"`

B

`20" J"`

C

`50" J"`

D

`40" J"`

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The correct Answer is:
A
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