A bomb of mass $30\,kg$at rest explodes into two pieces of masses $18\,kg$ and $12\,kg$. The velocity of $18\,kg$ mass is $6\,m{s^{ - 1}}$. The kinetic energy of the other mass is ....... $J$

  • [AIPMT 2005]
  • A

    $256 $

  • B

    $486$

  • C

    $524$

  • D

    $324$

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