7. -/5 points BoyceDiffEQ10 2.3.023. Ask Your Tea My Notes A skydiver, weighing 180 lb (including equipment) falls vertically downward from an altitude of 6000 ft and opens the parachute after 10 s of free fall. Assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.75|v| when the parachute is closed and is of magnitude 12|v| when the parachute is open, where the velocity v is measured in ft/s. (A computer algebra system is recommended. Use g = 32 ft/s² for the acceleration due to gravity. Round your answers to two decimal places.) (a) Find the speed of the skydiver when the parachute opens. ft/s (b) Find the distance fallen before the parachute opens. ft (c) What is the limiting velocity Vд after the parachute opens? V₁ = ft/s (d) Determine how long the sky diver is in the air after the parachute opens. S