A skydiver weighing 201 lb (including equipment) falls vertically downward from

Question

A skydiver weighing 201 lb (including equipment) falls vertically downward from an altitude of 4000 ft and opens the parachute after 13 s of free fall. Assume that the force of air resistance, which is directed opposite to the velocity, is 0.79|v| when the parachute is closed and 12|v| when the parachute is open, where the velocity v is measured in ft/s. Use g = 32 ft/s^2. Round your answers to two decimal places. (a) Find the speed of the skydiver when the parachute opens. v(13) = ft/s (b) Find the distance fallen before the parachute opens. x(13) = ft (c) What is the limiting velocity VL after the parachute opens? VL= ft/s

Explanation / Answer

a) 200ft/s

b) 150ft/s

c) 400ft/s

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