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MGIMS WARDHA MGIMS WARDHA Solved Paper-2014

  • question_answer
    A bomb of mass 16 kg at rest explodes into two pieces of masses 4 kg and 12 kg. The velocity of the 12 kg mass is\[4\text{ }m{{s}^{-1}}\]. The kinetic energy of the other mass is

    A)  192J                                     

    B)  96J

    C)  144 J                                    

    D)  288J

    Correct Answer: D

    Solution :

                    By law of conservation of linear momentum, the velocity of the 4 kg mass is\[12\text{ }m{{s}^{-1}}\]. Therefore, \[KE=\frac{1\times 4\times {{(12)}^{2}}}{2}=288J\]


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