Einstein velocity addition formula derivation | Special relativity | Physics | Khan Academy

Einstein velocity addition formula derivation.

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[seyencho]

A clarification: Why specifically did you divide both the numerator and denominator (x' and t' equations) by delta t? Is there any reason other than that it puts the equations into terms of v and u? If so? why don't we just divide both sides by delta x to put the equations in terms of 1/u and v or perform some other transformation that has creates an equation in terms of v and u? Essentially, is there anything special about--or some explicit or implicit reason for--dividing both the numerator and denominator of the Lorentz Transformation equation for x'/t' by t (and t specifically)?

[drsjamesserra]

Totally impressed with all the videos you made and all the knowledge you have from different subjects

[GauravKumar-lbze]

this is fairly good, cleared all my concept, thanks.

[qualquan]

Confusing. There are clearer expositions of this problem.