Asked by jean

a stone dropped from a balloon which was rising at the rate of 15 ft./sec. reached the ground in 8 seconds. how high was the balloon when the stone was dropped?
Answered by Reiny
height of balloon = -16t^2 + 15t + h
0 = -16(8^2) + 15(8) + h
h = .....
Answered by jean
it's 904 ft.

thank you :-)
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