30f15 ( > -/7 ;= View Policies Current Attempt in Progress A skydiver weighing 210 Ibf (including equipment) falls vertically downward from an altitude of 4000 ft and opens the parachute after 12 s of free fall. Assume that the force of air resistance, which is directed opposite to the velocity, is 0.72 | v| when the parachute is closed and 10 | v| when the parachute is open, where the velocity v is measured in ft/s. Use g = 32 fthz. Round your answers to two decimal places. (a) Find the speed of the skydiver when the parachute opens. v(12) = n ftxs (b) Find the distance fallen before the parachute opens. x(12) = n ft (c) What is the limiting velocity 11 after the parachute opens? VL = n /S