(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I read in my textbook that "in the instantanuous reference frame (IRF) [tex][u^{'\gamma}]=(c,\overline{0}) [/tex] imply that the components of the 4-acceleration in the IRF are [tex] [a^{'\gamma}]=(0,\overline{a'}) [/tex]"

2. Relevant equations

3. The attempt at a solution

I don't know why they got a' for the space-like components of the 4-acceleration. Isn't the accelaration = du/d[tex]\tau[/tex] if so then using [tex][u^{'\gamma}=(c,\overline{0}) [/tex] we get zero for both the time-like and space-like components of the 4-acceleration.

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# Homework Help: Components of the 4-acceleration

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