Question

A person has a reasonable chance of surviving an automobile crash if the deceleration is no more than 30 "g's" (recall that g = 9.8 m/s2). Calculate the force, in N, on a 68 kg person accelerating at this rate.

30"g" x 9.8
294 ms^2

f=ma
294x68
=19,992N

Answer 1

I don't see anything wrong with your calculations.

I don't even want to try 1 g (falling on my face), much less 30g. However, that's where air-bags come in, I guess.