The potential energy of a body at a certain height is 100 J. If it is under free fall, then the kinetic energy of the body before hitting the ground is [ignore air resistance]
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In Work, we saw that the work done on an object by the constant gravitational ... kind of energy for the system than its kinetic energy, which is called potential energy. ... As long as there is no friction or air resistance, the change in kinetic energy of ... gravity, and the difference in height the body traversed,
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