# physics

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The human body can survive an acceleration trauma incident (sudden stop) if the magnitude of the acceleration is less than 250 m/s2. If you are in an automobile accident with an initial speed of 136 km/h (85 mi/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?
i am asking for help, i just went as far as converting the km/hr to m/s, and got stuck.

• physics -

Vo = 136km/h = 136,000m/3600s=37.78 m/s

V^2 = Vo^2 + 2a*d
d = (V^2-Vo^2)/2a
d = (0-(37.78^2))/-500 = 2.85 m.

• physics -

5 × 10ooo

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