Re: basic mechanics question

In message <1126876035.685668.189910@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, PD <TheDraperFamily@xxxxxxxxx> writes

Autymn D. C. wrote: 
Demonstrating whatever is tantamount to measuring.  And the empiricism
doesn't pay attention to most reactions to see whether the conservation
does hold.  You'll find that momentum is quite untrackable in inelastic
collisions or outer space.


Really? Momentum is quite untrackable in inelastic collisions? You do
know that this is the basis for that handy little chart that police
officers use to determine how fast you were going when you rear-ended
that Pontiac?

Really? Momentum is quite untrackable in outer space? You do know that
conservation of angular momentum is the basis for Kepler's laws?

Poor dear's never heard of Noether's theorems.

--
Richard Herring
.

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