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Mathematics, 20.10.2019 18:30, ashhleyjohnson
Suppose a toy rocket is launched vertically upward from the top of a building with an initial velocity of 128 feet per second. if air resistance is ignored, the rocket's h height after t seconds is given by the equation h = −16t2 +128t + 100. how long will the rocket's flight last? (to the nearest tenth of a second) a) 7.6 seconds b) 7.9 seconds c) 8.7 seconds d) 9.3 seconds
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