Question

Dr. John Paul Stapp was 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 (a) acceleration and (b) deceleration. Express each in multiples of $g$ $(9.80 \textrm{ m/s}^2$ by taking its ratio to the acceleration of gravity.

a) $56.4 \textrm{ m/s}^2$ or $5.76 \textrm{ g's}$

b) $-201 \textrm{ m/s}^2$ or $20.6 \textrm{ g's}$

Solution Video