An occupant of a car has a chance of surviving a crash if the deceleration during the crash is not more than 30 g. Calculate the force on a 70 kg person deceleerating at the same rate.

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  1. Force equals mass times acceleration. If you multiply them together, you get the force in Newtons.

    acceleration = 30g = 30 * 9.8 m/s^2 = 294 m/s^2

    294 x 70 = ___ N

    One Newton is about a quarter pound of force.

    Here's another way to look at it: The decelerating force will be 30 times the person's weight.

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  2. 20,580

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  3. drwls is exactly right

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