Question

Colonel John P Stapp, USAF, participated in studying whether a jet pilot could survive an emergency ejection. On March 19, 1954, he rode 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 rest in 1.40 s. (a) Determine in SI units the negative acceleration he experienced. (b) Determine in SI units the distance he traveled during this negative acceleration. Step: (a) We assume the acceleration is constant. We choose the initial and final times 1.40 s apart, bracketing the slowing-down process. When we change the units of velocity from mi/h to m/s, we have the following conversion: 1609 m = 1 mi 3600 s = 1 h 197.767 m/s Submit Skip (You cannot come back)

          Colonel John P Stapp, USAF, participated in studying whether a jet pilot could survive an emergency ejection. On March 19, 1954, he rode 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 rest in 1.40 s.

(a) Determine in SI units the negative acceleration he experienced.
(b) Determine in SI units the distance he traveled during this negative acceleration.

Step:
(a) We assume the acceleration is constant. We choose the initial and final times 1.40 s apart, bracketing the slowing-down process. When we change the units of velocity from mi/h to m/s, we have the following conversion:
1609 m = 1 mi
3600 s = 1 h
197.767 m/s

Submit Skip (You cannot come back)

tutorial exercise colonel john p stapp usaf participated in studying whether jet pilot could survive emergency ejection march 19 1954 he rode rocket propelled sled that moved down track at 45588

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