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OpenStudy (anonymous):
Two identical bal ls are thrown from the top of a cliff, each with the same speed. One is thrown straight up, the other straight down. How do the kinetic energies and speeds of the balls compare as they strike the ground
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OpenStudy (ybarrap):
Since the velocities at point 2 and 3 in the diagram below are equal, then the velocities of both cases when they hit the ground will also be equal since they fall the same distance: |dw:1394328168898:dw|
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