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# Answer to Question #1985 in Calculus for Denise

Question #1985
A model rocket is fired vertically upward from rest. Its acceleration for the first three seconds is a(t) = 60t at which time the fuel is exhausted and it becomes a freely &quot;falling&quot; body. Fourteen seconds later, the rocket&#039;s parachute opens, and the (downward) velocity slows linearly to -18 ft/s in 5 s. The rocket then &quot;floats&quot; to the ground at that rate. (b) At what time does the rocket reach its maximum height? (Give your answer correct to one decimal place.) ___________________ s What is that height? (Give your answer correct to the nearest whole number.) ____________________ ft (c) At what time does the rocket land? (Give your answer correct to one decimal place.) _______________________ s
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