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Re: momentum



Thank you, Sam. I am merely, as usual, trying to find out what the
writer had in mind before explaining collision theory to the list.
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I will add further that this is a correct transformation for the
Galiean system (this is nonrelativistic). Being in collider physics, I
know that relativistically the lab frame and center of momentum (or mass
depending on level of correctness you want) do not have the same energy
available. (I deal with the transformations daily in my research.)
Luckily, our cars do not travel nearly as fast as would be required to
invoke the rel. transofrmations.


Sam Held
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"I scored the next great triumph for science myself,
to wit, how the milk gets into the cow. Both of us
had marveled over that mystery a long time. We had
followed the cows around for years - that is, in the
daytime - but had never caught them drinking fluid of
that color."
Mark Twain, Extract from Eve's
Autobiography