With what speed does the arrow leave the bow
A 0.073 kg arrow is fired horizontally. The bowstring exerts an average force of 75 N on the arrow over a distance of 0.90 m. With what speed does the arrow leave the bow?
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Relative to the ground, what is the gravitational potential energy of a 62.0 kg person who is at the top of the Sears Tower, a height of 443 m above the ground?
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