During the Apollo 14 mission, Alan Shepard hit a golf ball on the Moon. The function h(t) = 18t - 0.8t² models the height of

Question

During the Apollo 14 mission, Alan Shepard hit a golf ball on the Moon. The function  h(t) = 18t - 0.8t² models the height of the golf ball's trajectory on the Moon, where is the height, in metres , of the ball above the surface of the Moon and t is the time in seconds. Determine the instantaneous rate of change in the height of the ball at 5 seconds.

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