Re: Simple mechanics problem.

[EMAIL PROTECTED] (BretCahill) wrote:
> "Fred Klingener" <[EMAIL PROTECTED]> wrote: 
> . . .
> > Objects have kinetic energy relative to inertial frames.
> > Collisions don't.
> 
> Well?  How do you choose a reference 
> frame to calculate the kinetic energy 
> dissipated in a collision?

A frame relative to the point of collision maybe?  

> . . .
> >  This is what he was talking about, and threads like this are what he
> > was trying to save us from.
> 
> I like this thread.
> 
> After this we're going to do propulsion efficiency.
> 
> Bret Cahill