# Crash!

I'm driving my car of mass $$1000~\mbox{kg}$$ at $$100~\mbox{km/hr}$$ when I accidentally hit the rear end of a truck of mass $$5000~\mbox{kg}$$ traveling in the same direction at $$90~\mbox{km/hr}$$. My car and the truck lock together and move as a single object. Let $$F_1 \hat{x}$$ be the force the truck exerts on my car and let $$F_2\hat{x}$$ be the force my car exerts on the truck. What is $$F_1/F_2$$ during the collision?

Details and assumptions

• You may ignore friction and air resistance.
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