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The statement that a property of a system does not change if the system is isolated.

11 votes
4 answers
2k views

If angular momentum is conserved, what's wrong with this scenario?

I understand that, in a given system with no external torques applied, angular momentum is conserved. However, consider the following situation: Let's say the earth revolves around the Sun in a circl …
Cisplatin's user avatar
  • 479
3 votes
2 answers
2k views

How to calculate velocities after collision?

I'm currently writing a program for a particle simulator. One of the requirements is that the particles collide in a realistic way. However, I don't know how to calculate the final velocities. For ea …
Cisplatin's user avatar
  • 479