SOLUTION: A rock is dropped from the top of a tall building, 382 feet high . The path , in feet , is given by h(t)= -16t^2 + 382. How long after the rock is thrown is it 100 from the ground?

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Question 807454: A rock is dropped from the top of a tall building, 382 feet high . The path , in feet , is given by h(t)= -16t^2 + 382. How long after the rock is thrown is it 100 from the ground?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A rock is dropped from the top of a tall building, 382 feet high . The path , in feet , is given by h(t)= -16t^2 + 382. How long after the rock is thrown is it 100 from the ground?
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h(t)= -16t^2 + 382
-16t^2 + 382 = 100
Solve for t