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A ball with mass 1kg is dropped from a height of 6m. the ball is caught by a person 2m above the ground.
a. how much work is done on the ball by its weight.
b. calculate the potential energy of the ball relative to the ground when it is released initially.
Assuming that the bond energy holding together a water molecule is typical, use table below to estimate how various molecular bonds might be broken with this energy.
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