(adsbygoogle = window.adsbygoogle || []).push({}); Assignment of Variables plz Help!

Ok well Im very confused on what variables you assign for the velocity addition equation.

What is U' , U , and V? like lets say 2 rockets heading toward each other and I wanna find the speed i see if I'm on one of those rockets.

Also as a bonus I always get To and T and Lo and L mixed up explain?

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# Assignment of Variables Help!

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