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

A 15000 kg train traveling at 30m/s collides with a 2500 truck with a 90 kg man going at 22m/s in the opposite direction. The time of collision is 1.5 seconds. After collision, both objects are moving in the same direction with a velocity of 22 m/s. What is the size of the force felt by the man

2. Relevant equations

ft=mΔv

f=ma

3. The attempt at a solution

I tried to use the impulse equation, but can't seem to get a reasonable answer from it. I tried to find the acceleration then the next force, but still couldn't find a reasonable answer for the force.

I first tried to find acceleration using Vf=Vi+at.

22=-22+1.5a

a=29.2 m/s/s

f=90*29.2

f=2640 N

that force seems to small for a collision like this. would it be reasonable to assume the force felt by the car is about equal to what the person will feel?

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# Homework Help: Amount of Force felt in impact

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