Question: 022 A ball is thrown vertically upward from the top of a building 80 feet tall with an initial velocity of 64 feet per second.

022 A ball is thrown vertically upward from the top of a building 80 feet tall with an initial velocity of 64 feet per second. The distance s (in feet) of the ball from the ground after t seconds is s(t) = 80 + 64t - 16t2 (a) After how many seconds does the ball strike the ground? (b) After how many seconds will the ball pass the top of the building on its way down? DOCX CT Pr (a) After seconds the ball strikes the ground. DOCX glish 1

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