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OpenStudy (anonymous):
a ball is fired vertically into the air. Its height in feet t seconds later in feet t seconds later is given by the formula: h(t)= -2t^2+80t a) what is the height of the ball after 3 sec? b) what is the velocity of the ball after 5 sec? c) when does the ball reach its man height? d) what is the max height the ball reaches?
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