ble If an object moves along the y-axis ( f(x)=180x - 18x2, find the following. (A) The instantaneous velocity function v = f'(x) (B) The velocity when x=0 and x= 1 sec (C) The time(s) when v=0 marked in feet) so that its position at time x (in seconds) is given by A v =| | (B) The velocity when x=0 sec is D ft/sec. The velocity when x=1 sec is D ft/sec. (C) The velocity is 0 at x= D sec. (Simplify your answer. Use a comma to separate answers as needed.)