Wednesday, April 15, 2020

Car safety physics question?

Luis Mellon: human body can survive an acceleration trauma incident (sudden stop) if the magnitude of the acceleration is less than 250 ms/s.If you are in a car accident with an initial speed of 103 km/h and you are stopped by an airbag that inflates from the dashboard, over what distance must the airbag stop you for you to survive the crash?103 km/hr * 1000 m/km * 1 hr/3600 sec = 28.61 m/sFinal velocity^2 â€" Initial velocity^2 = 2 * acceleration * distanceacceleration = -250 m/s^2 because the car’s velocity is decreasing from 28.61 m/s to 0 m/s.0 â€" 28.61^2 = 2 * -250 * ddistance = 28.61^2 ÷ (2 * 250) = 1.637 m...Show more

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