Multiple Choice Questions on Two objects x and y have equal mass and are moving with speeds u and 3u respectively ........... for CAPF (AC) Exam Preparation

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Multiple Choice Questions

Two objects x and y have equal mass and are moving with speeds u and 3u respectively ...........

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    Two objects, x and y, have equal  mass and are moving with speeds u and 3u respectively.   Their    kinetic    energies kx and ky are related as

    This questions was previously asked in
    CAPF 2022 Paper-1
    View All CAPF Previous Year Papers

     kx =  ky

    Incorrect Answer

    2 kx =  ky

    Incorrect Answer

    9 kx =  ky

    Correct Answer

    3 kx =  ky

    Incorrect Answer
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    Explanation:

    9 kx =  ky.

    • - Kinetic energy is 1/2 mv2, so if masses are equal then square of velocity is the
    • deciding factor in final energy. So, if velocity is 3 time than Kinetic energy would be square of 3
    • that is 9 times the energy of another object

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