Answered: The main purpose of an air bag is to…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter11: Collisions

Section: Chapter Questions

Problem 8PQ

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The main purpose of an air bag is to stop a passenger during a car accident in a greater amount of time than if the air bag were not present. For example, consider a 56 kg person traveling at 21 m/s (about 47 mph). Use impulse and momentum to calculate how many newtons of force would be required to stop the person in 0.043 s, 0.086 s, and 0.43 s. Note how the force changes with increased time. (Enter the magnitudes.)

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Step 1

$Mass of person (m) = 56 k g Initial speed of car = 21 \frac{m}{s} Final speed = 0 \frac{m}{s}$

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