A potato is fired vertically upward from a potato cannon with an initial velocity of 84 ft/sec from a building that is 224-feet high. The position function is given by s(t) = -16t2 + 84t + 224. A. How long will it take for the potato B. What is the maximum height? to reach its maximum height? D. What is the velocity when the potato C. How long will it take the potato to passes the starting point on the way reach its starting height on the way down? down