(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

2. Relevant equations

Kinetic energy = Ke = (1/2)(mv^2) (joules - J)

where m = mass (kg)

v = velocity (m/s)

3. The attempt at a solution

What I was thinking was that the kinetic energy is divided uniformly over the distance d and hence

Average crush force = mv^2 / 2d

But I don't know how to prove that. Of course I could try to explain it with words, but I don't feel that it is enough.

Thank you in advance.

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# Average crush force exerted on a car

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