# Acceleration and Decceleration of a rocket sled for Dr. John Paul Stapp in 1954.

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On December 10, 1954, Dr. John Paul Stapp rode a rocket sled to a speed of 282m/s that is (632 mi/h), enduring extreme accelerations. He was accelerated from rest to his top speed in 5.00s and brought jarringly back to rest in only 1.40s!

Calculate his acceleration and decceleration. Express each in multiples of g by taking its ratio to the acceleration of gravity.

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#### Solution Preview

To solve for acceleration (a1):

V = Vo + a1*t

a1 = (V-Vo)/t = ...

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The solutions show the formulas and calculations to arrive at the answers.

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