SOLUTION: A toy rocket is shot vertically upward from the ground. Its distance in feet from the ground in t seconds is given by H(t)=-16t^2(squared) + 197t. At what time or times will the ba
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Question 91096: A toy rocket is shot vertically upward from the ground. Its distance in feet from the ground in t seconds is given by H(t)=-16t^2(squared) + 197t. At what time or times will the ball be 124 feet from the ground?
Can you please set up for me? Thanks. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A toy rocket is shot vertically upward from the ground. Its distance in feet from the ground in t seconds is given by H(t)=-16t^2(squared) + 197t. At what time or times will the ball be 124 feet from the ground?
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EQUATION:
-16t^2+197t = 124
16t&2-197t+124 = 0
t = [197+-sqrt(197^2-4*16*124)]/32
t = [197+-175.707]/32
t = 0.665 seconds and again at 11.65 seconds
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Cheers,
Stan H.
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