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(c) A ball is thrown up in the air from the roof of a tall building. The height of the ball, in feet, is given by h(r) = 80 + 151 — 5%, where 1 is the time, in seconds, since the ball was released. (1) (1 point) Find a formula for the velocity v(z) of the ball, in feet per second. (i1) (1 point) Find a formula for the acceleration a(r) of the ball, in feet per second per second. (i11) (1 point) Determine whether the ball is traveling upward or downward 2 seconds after it is released (iv) (1 point) Determine whether the ball is speeding up or slowing down 2 seconds after it is released. (v) (2 points) At what time is the ball at its highest point? Page 8