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9th Class Science Work and energy Question Bank Work, Energy and Power

  • question_answer
    The kinetic energy of a body is numerically equal to thrice the momentum of the body. The velocity of the body is

    A)  2 units           

    B)         3 units  

    C)  6 units           

    D)         9 units

    Correct Answer: B

    Solution :

     As mentioned in the problem,                 \[\frac{1}{2}m{{v}^{2}}=3mv\] or,                  \[v=6\,\,units\]


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