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A rock is dropped off the edge of a cliff and its distance s (in feet) from the top of the cliff after t seconds is s(t) = 16t . Assume the distance from the top of the cliff to the water below is 576 ft. Complete parts a and b below. a. When will the rock strike the water? The rock will strike the water at 6 seconds. (Simplify your answer.) b. Make a table of average velocities and approximate the velocity at which the rock strikes the water. Time Interval [5, 6] [5.5, 6] [5.9, 6] [5.99, 6] [5.999, 6] Average Velocity it sec (Type an integer or decimal rounded to three decimal places as needed.)