n an unsolved airplane hijacking case from 1971, the hijacker (given the alias of D. B. Cooper) parachuted out of the back of a Northwest Boeing 727 over the southwest part of Washington State with $200,000 in $20 bills strapped to his body. The money and four parachutes had been provided by the FBI after Cooper took over the plane, claiming to have a bomb. Despite an intensive search by the FBI and 400 troops from Fort Lewis near the projected landing spot, Cooper was never found and his fate remains unknown. The combined weight of Cooper, the money, and his parachutes was approximately 230 lbs. He jumped from an altitude of 10,000 feet. Assume a linear drag term of −cv (where c is the drag coefficient and v is the velocity), and assume that he opened his parachute instantaneously 30 seconds after he stepped out of the plane and that his drag coefficient was c = 1.1 lbs-sec/ft before the chute opened and c = 12 lbs-sec/ft after. Estimate the speed (in ft/s) with which he hit the ground. (Round your answer to the nearest whole number.)
n an unsolved airplane hijacking case from 1971, the hijacker (given the alias of D. B. Cooper) parachuted out of the back of a Northwest Boeing 727 over the southwest part of Washington State with $200,000 in $20 bills strapped to his body. The money and four parachutes had been provided by the FBI after Cooper took over the plane, claiming to have a bomb. Despite an intensive search by the FBI and 400 troops from Fort Lewis near the projected landing spot, Cooper was never found and his fate remains unknown. The combined weight of Cooper, the money, and his parachutes was approximately 230 lbs. He jumped from an altitude of 10,000 feet. Assume a linear drag term of −cv (where c is the drag coefficient and v is the velocity), and assume that he opened his parachute instantaneously 30 seconds after he stepped out of the plane and that his drag coefficient was c = 1.1 lbs-sec/ft before the chute opened and c = 12 lbs-sec/ft after. Estimate the speed (in ft/s) with which he hit the ground. (Round your answer to the nearest whole number.)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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n an unsolved airplane hijacking case from 1971, the hijacker (given the alias of D. B. Cooper) parachuted out of the back of a Northwest Boeing 727 over the southwest part of Washington State with $200,000 in $20 bills strapped to his body. The money and four parachutes had been provided by the FBI after Cooper took over the plane, claiming to have a bomb. Despite an intensive search by the FBI and 400 troops from Fort Lewis near the projected landing spot, Cooper was never found and his fate remains unknown. The combined weight of Cooper, the money, and his parachutes was approximately 230 lbs. He jumped from an altitude of 10,000 feet. Assume a linear drag term of
−cv
(where c is the drag coefficient and v is the velocity), and assume that he opened his parachute instantaneously 30 seconds after he stepped out of the plane and that his drag coefficient was
c = 1.1 lbs-sec/ft
before the chute opened and
c = 12 lbs-sec/ft
after. Estimate the speed (in ft/s) with which he hit the ground. (Round your answer to the nearest whole number.)
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