J & K CET Engineering J and K - CET Engineering Solved Paper-2011

  • question_answer
    For a moving particle (mass m, velocity v) having a momentum p, which one of the following correctly describes the kinetic energy of the particle?

    A)  \[\frac{{{p}^{2}}}{2m}\]

    B)  \[\frac{p}{2m}\]

    C)  \[\frac{{{v}^{2}}}{2m}\]

    D)  \[\frac{v}{2m}\]

    Correct Answer: A

    Solution :

    Kinetic energy of particle \[=\frac{1}{2}m{{v}^{2}}\] or \[K=\frac{p}{2m}\] \[[\because \,\,p<\,mv]\]


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