Re: basic mechanics question

PD wrote:
>
> 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?
>
> PD

SEEMs, momentum is ALWAYs "passe" (i.e. in RETROspect);
Or as with POLiCE radar ..ONLY *2nd-hand* RETROspect.!!
```Brian

.

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