[IDEA] Ultra-high-energy collisions

[QuantumDotGuy]

Randall Munroe, the genius behind http://www.xkcd.com/, once received a question from one of his readers about...well, I'll just let you read it and save myself the trouble of explaining. Don't worry, I'll wait here for you.


http://what-if.xkcd.com/20/


Okay, now that you're done, I'll get to the point: I want to be able to recreate this and produce those results. I realize this would be quite a ways down the road, and it isn't at all necessary for the proper operation of the simulator, but it would still be cool.

[spa_sapping]

Love Randall XD

ok what is the next part, screenshots, videos ?

Or help with doing the simulation :I ?

[QuantumDotGuy]

No, I've simulated something close to what is in the blog post. I couldn't get the carbon sphere's properties quite right, since carbon isn't included in the materials list. If I recall, the density and the radius were off, but the mass and the velocity were accurate to the 25^th decimal (why not?). My problem is with the result, which was almost, but not quite pretty much entirely unlike the "What If?" result.


EDIT: I just did it again with a (heavily) modified bowling ball and was able to get every property exactly as it needed to be.

[Xriqxa]

SPH+Air Resistance plis