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Physics, 18.07.2019 18:30 daltonbrown4

If a ball is thrown into the air with a velocity of 39 ft/s, its height (in feet) after t seconds is given by y = 39t − 16t2. find the velocity when t = 1.

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If a ball is thrown into the air with a velocity of 39 ft/s, its height (in feet) after t seconds is...
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