JEE Main & Advanced Physics Work, Energy, Power & Collision / कार्य, ऊर्जा और शक्ति Question Bank Conservation of Energy and Momentum

  • question_answer
    If velocity of a body is twice of previous velocity, then kinetic energy will become                             [AFMC 1996]

    A)                 2 times

    B)                    \[\frac{1}{2}\]times

    C)                 4 times

    D)                 1 times

    Correct Answer: C

    Solution :

                        Kinetic energy = \[\frac{1}{2}m{{v}^{2}}\] \ K.E.\[\propto \]v2 If velocity is doubled then kinetic energy will become four times.         


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