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    Adrum of mass ‘m’ kg was rolled down a ramp. At the bottom of the ramp its kinetic energy was 10 kJ and velocity was 20 m/s. With what velocity (in m/
    Question

    Adrum of mass ‘m’ kg was rolled down a ramp. At the bottom of the ramp its kinetic energy was 10 kJ and velocity was 20 m/s. With what velocity (in m/s) was it
    pushed down the ramp if its initial kinetic energy was 625 J?

    A.

    5m/s

    B.

    7.5 m/s

    C.

    10 m/s

    D.

    2.5 m/s

    Correct option is A



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