Date: Fri Jun 13 14:09:26 2008 Back to Contents

Author: Wolfgang Rueckner

Subject: Re: collisions on CarTalk


Quite true. Indeed, I was going to explain the importance (and
reason) of wearing seat belts, etc, but the conversation didn't
happen to go in that direction. Maybe next time. -- Wolfgang

On Jun 13, 2008, at 1:39 PM, Rick Tarara wrote:

> I think there was a little missing from the explanation--
> understandable due to the audience. While the impulse is the same,
> the danger to the occupants is actually the force, not really the
> change in momentum (since braking will accomplish the same momentum
> change). That is ruled by the time taken to come to rest--the
> delta-t in the impulse--the longer the better. Now with identical
> cars, we can assume that the crush zones will be nearly the same in
> the head on collision so that the delta-t will be the same whether
> hitting the wall or the other car. OTOH, this is really part of
> explaining the importance of properly designed crush zones and the
> importance of air bags in collisions, so it might have been useful
> to include such info.
> Rick
> ***************************
> Richard W. Tarara
> Professor of Physics
> Saint Mary's College
> Notre Dame, IN
> ******************************
> Free Physics Software
> PC & Mac
> *******************************
> ----- Original Message ----- From: "Wolfgang Rueckner"
> To:
> Sent: Friday, June 13, 2008 12:08 PM
> Subject: [tap-l] collisions on CarTalk
>> If you want to waste a few minutes listening to my latest
>> contribution, here's the link. I'm segment #6 of last week's show:
>> from the shameless promotional division --Wolfgang

From Fri Jun 13 14:09:26 2008