> That seems rather fast, but OK...
>
> Also, if you google "baseball impact physics", you quickly find
>   http://webusers.npl.uiuc.edu/~a-nathan/pob/
>
> with a link to an article in the Nov. 2000 American Journal of
> Physics:  "Dynamics of the baseball--bat collision"
>   http://webusers.npl.uiuc.edu/~a-nathan/pob/AJP-Nov2000.pdf


I had found some of the papers referenced, but not that page.

In the end though, too much information. I need something I can give
to a crystal vendor to say "has to withstand this".  The baseball vs
bat thing is an approximation anyway, so it's closer to an "order of
magnitude" answer that I'm looking for.
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