Question 820359: If a rocket is launched from Houston, Texas, with an initial velocity of 1600 feet per second, when will the rocket be 14,400 feet high?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! If a rocket is launched from Houston, Texas, with an initial velocity of 1600 feet per second, when will the rocket be 14,400 feet high?
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h(t) = -16t^2+1000t
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Solve:: -16t^2+1000t-14,400 = 0
(2x-45)(-8t+40) = 0
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Positive solution:
x = 22.5 seconds
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Cheers,
Stan H.
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