A skydiver weighing 173 Ibf (including equipment) falls vertically downward from an altitude of 4000 ft and opens the parachute after 14 s of free fall. Assume that the force resistance, which is directed opposite to the velocity, is 0.76|v| when the parachute is closed and 15 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/s?. Round your answers to two decimal places. (a) Find the speed of the skydiver when the parachute opens. v(14) = ft/s (b) Find the distance fallen before the parachute opens. X(14) = ft (c) What is the limiting velocity vL after the parachute opens? VL = ft/s

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.7: More On Inequalities
Problem 44E
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A skydiver weighing 173 Ibf (including equipment) falls vertically downward from an altitude of 4000 ft and opens the parachute after 14 s of free fall. Assume that the force
resistance, which is directed opposite to the velocity, is 0.76|v| when the parachute is closed and 15 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/s?. Round your answers to two decimal places.
(a) Find the speed of the skydiver when the parachute opens.
v(14) =
ft/s
(b) Find the distance fallen before the parachute opens.
X(14) =
ft
(c) What is the limiting velocity vL after the parachute opens?
VL =
ft/s
Transcribed Image Text:A skydiver weighing 173 Ibf (including equipment) falls vertically downward from an altitude of 4000 ft and opens the parachute after 14 s of free fall. Assume that the force resistance, which is directed opposite to the velocity, is 0.76|v| when the parachute is closed and 15 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/s?. Round your answers to two decimal places. (a) Find the speed of the skydiver when the parachute opens. v(14) = ft/s (b) Find the distance fallen before the parachute opens. X(14) = ft (c) What is the limiting velocity vL after the parachute opens? VL = ft/s
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