SOLUTION: Differential Calculus A coin is dropped from the top of the washington monument (a height of 550 feet) and its height above ground is given by s(t)= -16t^2+550, find the time wh

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Question 721182: Differential Calculus
A coin is dropped from the top of the washington monument (a height of 550 feet) and its height above ground is given by s(t)= -16t^2+550, find the time when the coin reaches the ground level.

Answer by Alan3354(69443) About Me  (Show Source):
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A coin is dropped from the top of the washington monument (a height of 550 feet) and its height above ground is given by s(t)= -16t^2+550, find the time when the coin reaches the ground level.
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s(t)= -16t^2+550 = 0
16t^2 = 550
Solve for t, the + value