The height h, in feet, of a ball that is released 5 ft above the ground with an initial upward velocity of 80 ft/s is a function of the time t, in seconds, the ball is in the air and is given by the following. h(t) = −16t2 + 80t + 5, 0 ≤ t ≤ 5.06 (a)  the height of the ball (in feet) above the ground 2 s after it is released.  ft (b) Find the height of the ball (in feet) above the ground 4 s after it is released.  ft

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