Give two examples to show how kinetic energy is used to do useful work.
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A bicycle or skateboard in motion possesses kinetic energy. Running water has kinetic energy and it is used to run water mills. Moving air has K.E and is used to derives windmills and pushes sailing boats, similarly, a bullet fired from a gun has kinetic energy and can penetrate into a target because of its K.E.M.
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it is very simple
work always need motion or kinetic energy because
any work can't be done being in potential
it needs kinetic energy and force in order to do work which is force into displacement
like kinetic energy is used to generate other renewable resources energy
Such as---hydro energy
---wind energy from windmills and turbines
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