Question

A skydiver weighing 272 lbf (including equipment) falls vertically downward from an altitude of 6000 ft and opens the parachute after 15 s of free fall. Assume that the force of air resistance, which is directed opposite to the velocity, is 0.76|v| when the parachute is closed and 10|v| when the parachute is open, where the velocity v is measured in ft/s.

Measure the positive direction of motion downward. Consider that x(0)=0 ft. Use g=32 ft/s². Round your answers to two decimal places.

(a) Find the speed of the skydiver when the parachute opens.

v(15)= Enter your answer in accordance to the item a) of the question statement ft/s

(b) Find the distance fallen before the parachute opens.

x(15)=Enter your answer in accordance to the item b) of the question statement ft

  

(c) What is the limiting velocity vL after the parachute opens?

vL= Enter your answer in accordance to the item c) of the question statement ft/s

Answer 1