19. [-/5 Points] DETAILS LARCALC11 2.2.095. A silver dollar is dropped from the top of a building that is 1393 feet tall. Use the position function below for free-falling objects. s(t) = -16tz+ vat+ so (a) Determine the position and velocity functions for the coin. s(t) = v (t ) = (b) Determine the average velocity on the interval [1, 2]. ft / s (c) Find the instantaneous velocities when t = 1 second and t = 2 seconds. v(1) = ft / s V (2 ) = ft/s (d) Find the time required for the coin to reach the ground level. (Round your answer to three decimal places.) t = S (e) Find the velocity of the coin at impact. (Round your answer to three decimal places.) ft/s Need Help? Read It e a X P N W O