Answer to Question #314283 in Mechanics | Relativity for Newton

Mechanics | Relativity

Question #314283

Two particles come towards each other with speed 0.9c with respect to laboratory. Calculate their relative speeds.

Expert's answer

The relative velocity

"v_{r}=\\frac{v+u}{1+\\frac{vu}{c^2}}"

"v_r=\\frac{0.9c+0.9c}{1+\\frac{(0.9c)^2}{c^2}}=0.994c"

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