Moontanman Posted May 1 Report Posted May 1 If two space craft were approaching each other at 99.999% of the speed of light, what would the speed of each appear to be to the other since the speeds would not add up like two trains traveling at 100 mph toward each other. Quote
oldpaddoboy Posted May 1 Report Posted May 1 1 hour ago, Moontanman said: If two space craft were approaching each other at 99.999% of the speed of light, what would the speed of each appear to be to the other since the speeds would not add up like two trains traveling at 100 mph toward each other. Can't help too much as I am mathematically ignorant, but length contraction and time dilation are what is relevant. Moontanman 1 Quote
pzkpfw Posted May 2 Report Posted May 2 (edited) They got good answers here: (link removed) (There was an issue in that the question was a bit vaguely worded, so it went in circles a bit.) Edited May 2 by Moontanman Quote
Moontanman Posted May 2 Author Report Posted May 2 10 hours ago, pzkpfw said: They got good answers here: https://www.scienceforums.net/topic/133912-combined-speeds-at-relativistic-velocities/ (There was an issue in that the question was a bit vaguely worded, so it went in circles a bit.) Please do not direct to another forum on here, link is removed. Quote
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