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Professional Application 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 m/s2) by taking its ratio to the acceleration of gravity.
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- An unwary football player collides with a padded goalpost while running at a velocity of 6.50 m/s and comes to a full stop after compressing the padding and his body 0.250 m. (a) How long does the collision last? (b) What is his deceleration in m/s2?arrow_forwardA world’s land speed record was set by Colonel John P. Stapp when in March 1954 he rode a rocket-propelled sled that moved along a track at 1020 km/h. He and the sled were brought to a stop in 1.4 s. In terms of g, what acceleration did he experience while stopping?arrow_forwardConsider a dragster that, when the light turns green, accelerates uniformly from rest and completes a 372 meter race in a time of 6.61 seconds. a) During this period, what is the dragster's acceleration expressed as a multiple of the acceleration due to gravity, g? b) If the dragster could continue with this average acceleration, what would its speed be, in miles per hour, after it has traveled a total distance of 1.6km1.6km, which is approximately one mile?arrow_forward
- Professional Application 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 g (9.80 m/s) of by taking its ratio to the acceleration of gravity.arrow_forwardA woodpecker's brain is specially protected from large decelerations by tendon-like attachments inside the skull. While pecking on a the woodpecker's head comes to a stop from an initial velocity of 0.556 m/s in a distance of only 1.75 mm. tree, a) Find the acceleration in multiples of 9.81 m/s² (g). 2 49 b) Calculate the stopping time. c) The tendons cradling the brain stretch, making its stopping distance 4.68 mm (greater than the head and, hence, less deceleration of the brain). What is the brain's deceleration, expressed in multiples of g? 4.9arrow_forwardI fill my tea mug (3.1” diameter and 7.5" tall) to 0.5" from the top and put it in the cup holder of my car without remembering to drink any. During my trip, I accelerate and decelerate smoothly (no hills, bumping, or sloshing). If the tea in the mug is 1" from the top when I get to my destination, the maximum acceleration was about ft/s2arrow_forward
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- Glencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill