These programs allow you to build and view 3D models of the world. In some cases they can produce animations and some have scripting but they are are not really programming environment.
I don't claim to have a lot of experience using commercial editors. I list them here to show what is available on the market.
EOVIA Carrara Studio 2 (Windows) - This is a commercial 3D modelling tool with some Physics simulation. I think it is aimed at games and animations, not for accurate physics simulation. Eovia (http://www.eovia.com).
See carrara site for information about version 3 launch in Sept 2003.
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