two particles move away from each other at 90 deg. How fast must they move to be light speed relative to each other?
Two particles are emitted by an explosion, traveling the same speed. at an angle of 90 degrees relative to each other. How fast must they travel to be moving at Light speed apart.----Yes, I know its a Pythagorean hypotenuse relationship , but the inverse---and I am not sure of my own math.
I think its something like c/sqr2, but I am not sure of my math
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