If an object is dropped from a high cliff or a tall building, then the distance it has fallen after t seconds is given by the function d(t) = 161². Find its average speed (average rate of change) over the following intervals: (a) Between 1 s and 5 s (b) Between t = a and t = a + h d(t) = 1612 Function: In t seconds the stone falls 1612 ft.

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