From: "Geo" 

"John Beckett"  wrote
in message news:4289bb1c.1981849{at}216.144.1.254...

> You had to do a lot of work to dig that hole.
> Also, I have to do a fair bit of work just to stand upright.

Right, so think of yourself as a force (you use energy don't you) and then
figure out where the equal and opposite force is coming from and from where
it draws it's energy.

Geo.

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