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    Truck and Car Kinetic Energies

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    A truck has four times the mass of a car, however, the car is moving with twice the speed of the truck. If Kt and Kc refer to the kinetic energies of truck and car respectively, it is correct to say which of the following?

    Kt= 4Kc
    Kt= 2Kc
    Kt= Kc
    Kt= 1/2Kc.

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    Solution Preview

    Let the mass of the car = m
    Mass of the truck = 4m

    Speed of ...

    Solution Summary

    Simple problem illustrating the relation between mass and kinetic energy.