SOLUTION: A ball is thrown downward from the top of a 90-story building. The distance d, in feel, the ball is above the ground after t seconds is given by the function d=f(t)=-16t^2-80t+800.
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Question 1197559: A ball is thrown downward from the top of a 90-story building. The distance d, in feel, the ball is above the ground after t seconds is given by the function d=f(t)=-16t^2-80t+800. Determine f(2) and explain what it means. Found 3 solutions by greenestamps, ewatrrr, ikleyn:Answer by greenestamps(13203) (Show Source):
You can put this solution on YOUR website! f(t)=-16t^2-80t+800
Using FREE software found at padowan.dk
The Evaluate feature gives f(2sec) = 576ft, number of feet from the ground at 2 sec
Can see by graph, at 5 sec the projectile hits the ground. .
