Phun is a 2D "physics sandbox," a program created by a Swedish CompSci major as his Master of Science thesis. It's way cool; a great way for kids (of all ages) to learn physics concepts. It's available for Mac, Windows, and Linux.
Phun physics program
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Come on.....why reinvent the wheel?....there are plenty of physics engine available :)...
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Awesome program! But what happens when you accelerate an object towards c?
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I played around with this a few weeks ago - I really enjoy little sandboxes like it, especially physics-based ones! It reminds me a lot of my friend Petri's game Crayon Physics (http://www.kloonigames.com/crayon/), with more possible physics interactions but no goal structure. Fun times!
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