Dr. john paul stapp was a u. s. air force officer who studied the effects of extreme deceleration on the human body. on december 10, 1954, stapp rode a rocket sled, accelerating from rest to a top speed of 282 m/s (1015 km/h) in 5.00 s, and was brought jarringly back to rest in only 1.40 s! calculate his average acceleration during the first part of his motion. express your answer in multiples of g by taking its ratio to 9.80 m/s^2.
calculate his average deceleration during the second part of his motion. express your answer in multiples of g by taking its ratio to 9.80 m/s^2