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Sarah is holding a 20 kg dumbbell over a 30-meter high cliff (32 meters from her...

Sarah is holding a 20 kg dumbbell over a 30-meter high cliff (32 meters from her hands to the ground). Just as she releases the dumbbell, it has a potential energy of 6272 J and kinetic energy of 0 J. However, just as the dumbbell hits the ground, how much potential and kinetic energy does it have?

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