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Hakeem throws a 8.5 g ball straight down from a height of 2.0 m. The ball strikes the floor at a speed of 7.9 m/s. What was the initial speed of the

Hakeem throws a 8.5 g ball straight down from a height of 2.0 m. The ball strikes the floor at a speed of 7.9 m/s. What was the initial speed of the ball? Assume that air resistance is negligible

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