While moving between a tall tree and a building a squirrel, Ask an Expert

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While moving between a tall tree and a building, a squirrel drops an acorn straight down. A conveniently placed sensor on the ground determines the final velocity of the acorn before it hits the ground is 20m/s.

A.) Assuming air resistance is negligible, from what height did the acorn fall?

B.) How long did it take the acorn to reach the ground?

C.) If the acorn started its fall with an initial horizontal velocity, how would the time to fall compare to what you calculated in part B? Explain.

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