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22 December, 16:50

A mass of 2000 kg is raised 5 m in 10 seconds. What is the kinetic energy of the mass at that height?

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  1. 22 December, 19:49
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    Answer;

    98,000 joules

    Explanation;

    Kinetic is the energy possessed by a body in motion; while kinetic energy is the energy possessed by a body while at rest.

    Potential energy is given by; mgh, where m is the mass, g the gravity, 9.8 m/s² and h is the height.

    Energy can be transformed from one form to another and can neither be created or destroyed.

    Therefore;

    Potential energy = 2000 * 5 * 9.8

    = 98,000 joules

    Therefore, the kinetic energy will still be 98,000 joules, when the body is in motion.
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