On Thu, 14 Sep 2000, I wrote:
>
> > Meanwhile, N1 is tantamount to a statement of conservation of
> > momentum.
Ooops.
At 12:01 PM 9/14/00 -0700, John Mallinckrodt wrote:
>It is N3 that is equivalent to the statement of conservation of
>momentum.
That is correct. I spaced out. The words said N1 but my mind was 100%
fixated on the equal-and-opposite law. If you renumber things, replacing
"N1" by "N3" in my note, then my note makes more sense (but then it is
non-responsive to Carl's question).