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Mathematics, 09.10.2021 18:50 gabrielgutierrez730

A ball is thrown vertically upward with an initial velocity of 48 feet per second. The distance s (in feet) of the ball from the ground after t seconds is s= 48t-16t^2. A) At what time t will the ball strike the ground?
B) For what time t is the ball more than 20 feet above the ground?

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