Question: (a) Prove that any time like vector for which U0 > 0 and = 1 is the four-velocity of some world

(a) Prove that any time like vector for which U0 > 0 and · = −1 is the four-velocity of some world line.
(b) Use this to prove that for any time like vector there is a Lorentz frame in which has zero spatial components.

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a Prove that any time like vector for which U 0 0 and 1 is the fourvelocity of some world line The fourvelocity is the 0 in the MCRF If is some world ... View full answer

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