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19 February, 06:56

Two objects were lifted by machine one object had a massive 2 kg it was lifted at a speed of 2 m/s the other had a massive 4 kg and was lifted at a rate of three meters per second which object has more kinetic energy

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  1. 19 February, 08:25
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    Kinetic energy = (1/2) (mass) (speed²)

    First object: KE = (1/2) (2 kg) (2m/s) ² = 4 joules during the lift.

    Second object: KE = (1/2) (4kg) (3 m/s) ² = 18 joules during the lift.

    The second object has more kinetic energy while it's being lifted

    than the first object has while it's being lifted. Once they reach their

    final heights and stop, neither object has any kinetic energy.
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