Problema Solution
A person drops an object from the top of window.The window is 576 feet tall. The height h of the object t seconds is given by the equation h=-16t^2+576. Find how many seconds pass before the object hits the ground?
Answer provided by our tutors
h=-16t^2+576
The object will hit the ground when h = 0 that is:
-16t^2+576 = 0
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click here to see the equation solved for t
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t = 6 s
We need to ignore the negative solution -6 since the time is always positive.
The object hits the ground in 6 seconds.