Open Simulator with Physics Engine

[Edward Cherlin]

Has anybody looked at this for the XO?

http://opensimulator.org/wiki/PhysicsEngines

The physics is not very realistic yet. Presumably we could manage
simple statics and dynamics, with graphs of position, velocity, and
acceleration.

I would like to have a simulation engine available for integration
into e-textbooks. What other candidates are there?

-- 
Edward Cherlin
End Poverty at a Profit by teaching children business
http://www.EarthTreasury.org/
"The best way to predict the future is to invent it."--Alan Kay