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A stationary particle explodes into two ...

A stationary particle explodes into two particle of a masses `m_(1) and m_(2)` which move in opposite direction with velocities `v_(1) and v_(2)`. The ratio of their kinetic energies `E_(1)//E_(2)` is

A

`frac(m_2)(m_1)`

B

`frac(m_1)(m_2)`

C

`frac(2m_2)(m_1)`

D

`frac(2m_1)(m_2)`

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