Colonel John P. Stapp, USAF, participated in studying whether a jet pilot could survive emergency injection. On March 19, 1954, he rode a rocketpropelled sled that moved down a track at a speed of 632 mi/h. He and the sled were safely brought to rest in 1.40 s. Determine in (1) the negative acceleration he experienced and (2) the distance he traveled during this negative acceleration. (Draw the diagram

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