# Special relativity (composition of velocities) Calculator

## Calculates the composition of two velocities.

 Velocity of a body A v1 km/s ≦c Velocity of a body B v2 km/s ≦c 6digit10digit14digit18digit22digit26digit30digit34digit38digit42digit46digit50digit Composition of velocities v km/s
 The compound velocity v does not exceed the velocity of light c.$\normal Composition\ law\ for\ velocities\\\vspace{5}\hspace{20} v={\large\frac{v_1+v_2}{1+{\large\frac{v_1v_2}{c^2}}}},\hspace{20}c=299792.458km/s$

Special relativity (composition of velocities)
 [1-1] /1 Disp-Num5103050100200
[1]  2018/12/04 17:36   - / - / - / - /
Bug report
If you input 0.8c and 0.6*c, or 0.8*c and 0.6*299792.458, it gives 179,875.4748

but if you input 0.8*299792.458 and 0.6*299792.458, or 0.8*299792.458 and 0.6*c, it gives 283,587.46027027, which is the correct value

so something seems to be borken with 0.8*c

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