On 29 May 2003 16:06:53 -0700, "Sean R. Lynch" <[EMAIL PROTECTED]>
wrote:

>A head on collision with a barrier that absorbs a negligible amount of
>energy (i.e. a concrete wall that does not collapse or move) is
>equivalent to a head on collision between two cars of equivalent mass at
>*the same speed*. So this is actually like a head on collision with both
>cars doing 220 mph in terms of the kinetic energy absorbed by one of the
>vehicles, since the wall doesn't absorb any.

It does, though.  Dunno about NASCAR, but USAC walls spall when they
get hit really hard.

-R

-- "We've all heard that a million monkeys banging on a million typewriters
will eventually reproduce the entire works of Shakespeare.  Now, thanks to
the Internet, we know this is not true." -- Robert Wilensky, UC Berkeley
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