Physical Science

posted by Jinja

Two objects were lifted by a machine. One object had a mas of 2 kilograms, and was lifted at a speed of 2 m/sec. The other had a mass of 4 kilogram was lifted at a rate of 3 m/sec.
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a) Which object had more kinetic energy being lifted?

b) Which object had more potential energy when it was lifted to a distance of 10 meters? Show your calculation.

Help!!!

  1. Damon

    Ke = (1/2) m v^2

    (1/2)*2*2^2 = 4 Joules
    (1/2)*4*3^2 = 18 Joules

    B) m g h
    2*g*10
    4*g*10
    which is bigger?

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