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# A baseball diamond is a square with side $90 ft.$ A batter hits the ball and runs toward first base with a speed of $24 ft/s.$(a) At what rate is his distance from second base decreasing when he is halfway to first base?(b) At what rate is hits distance from third base increasing at the same moment?

## a) -10.7b) 10.7

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Ohio State University

Derivatives

Differentiation

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