A potato is launched vertically upward with an initial velocity of 139 ft/s from a potato gun at the top of an 85-foot-tall building. The distance in feet that the potato travels from the ground after t seconds is given by s(t) 36t2 + 150t F 2. (i) Find the velocity of the potato after 0.5 s ft/s (ii) Find the speed of the potato at 0.5 s ft/s (iii) Determine when the potato reaches its maximum height%= (iv) Find the acceleration of the potato at 0.5 s ft/s?

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