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Re: Impulse

At 12:32 AM 10/31/01 -0500, you wrote:
>Here's an interesting (IMO) statement from the "Real-life Safety"
>engineering group at Saab: "When other vehicles are involved, the
>intensity of the crash forces is usually about half the level of the
>forces generated at the same speed against a barrier. Accidents
>involving actual impacts against rigid objects at speeds above 40 mph
>(equivalent to about 80 mph car to car)..."

It is interesting, but pretty vague as stated. What are they trying
to say exactly?

/snip/

Stefan Jeglinski


Could it be they are saying the change of momentum perceived by an occupant
in a car in an impact with a springy tree is about twice the momentum change
when the car crumples against another without rebounding?