College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Colonel John P. Stapp, USAF, participated in studying whether a jet pilot could survive emergency ejection. Ôn March 19, 1954, he rod
a rocket-propelled sled that moved down a track at a speed of 632 mi/h (see figure below). He and the sled were safely brought to res
in 1.40 s.
(a) Determine in SI units the negative acceleration he experienced.
m/s²
(b) Determine in SI units the distance he traveled during this negative acceleration.
left, Courtesy U.S. Air Force;
right, Photri, Inc.
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Transcribed Image Text:Colonel John P. Stapp, USAF, participated in studying whether a jet pilot could survive emergency ejection. Ôn March 19, 1954, he rod a rocket-propelled sled that moved down a track at a speed of 632 mi/h (see figure below). He and the sled were safely brought to res in 1.40 s. (a) Determine in SI units the negative acceleration he experienced. m/s² (b) Determine in SI units the distance he traveled during this negative acceleration. left, Courtesy U.S. Air Force; right, Photri, Inc.
Expert Solution
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Step 1

(a)

The initial speed of the jet, u=632 mi h-1=632×160960×60=282.5 m/s

Final velocity, u=0 

Time, t=1.4 s

v=u+at282=0+a×1.4a=-202 m/s2

Negative acceleration is -202 m/s2

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