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- (Almost) double light speed 6 answers
Firstly, I apologize if this is the wrong place to post this question; I'm not a scientist, just curious. So: if the speed of light (299 792 458 m/s according to Google) is an absolute limit even for relative speeds, then what happens if I throw a rock such that it achieves the speed of light, and then throw another in exactly the opposite direction (at any speed I guess, but lets say speed of light)? What is their velocity relative to one another?