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Physics, 20.09.2019 17:20 randyg0531
Captain john stapp is often referred to as the "fastest man on earth." in the late 1940s and early 1950s, stapp ran the u. s. air force's aero med lab, pioneering research into the accelerations which humans could tolerate and the types of physiological effects which would result. after several runs with a 185-pound dummy named oscar eightball, captain stapp decided that tests should be conducted upon humans. demonstrating his valor and commitment to the cause, stapp volunteered to be the main subject of subsequent testing. manning the rocket sled on the famed gee whiz track, stapp tested acceleration and deceleration rates in both the forward-sitting and backward-sitting positions. he would accelerate to aircraft speeds along the 1200-foot track and abruptly decelerate under the influence of a hydraulic braking system. on one of his most intense runs, his sled decelerated from 282 m/s (632 mi/hr) to a stop at -201 m/s/s. determine the stopping distance and the stopping time.
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