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Results tagged with velocity
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user 282947
The time rate of change of the position of an object
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An object near the speed of light is moving slow and therefore not close to the speed of light?
Is it's velocity then slower? Say its reference frame is given by $S´$ and mine is given by $S$. Then from my perspective its time $t´=\gamma t$, if $x=x´=0$. …
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Is relativistic velocity "implicit" a slower velocity?
First okay so because relative velocity is reflexive we can agree on that velocity is same between to reference frames, (v or -v). … First okay so because relative velocity is reflexive we can agree on that velocity is same between to reference frames, (v or -v). …
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How can we be sure, that the dot-product of the four-vectors $U$ and $A$ in special relativi...
I'am currently taking class in relativity and in the book that i have it is said that the four-vectors of velocity and acceleration is zero. I know that the invariance of the velocity is $-c^2$. … Is it from this fact that the dot-product of four-acceleration and four-velocity must be orthogonal? It doesn't seem that calculating $u^\alpha \cdot a_{\alpha}$ is equal to zero. …
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How can we be sure, that the dot-product of the four-vectors $U$ and $A$ in special relativi...
Thank very much. Both explanations are good. I would just like to say, that Yardan Sheffer's explanation just needed charlie's link to give the full explanation. So the answer in why they are orthogon …
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