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May 19, 2014 at 16:27 vote accept Gobiel
May 19, 2014 at 8:53 history edited Qmechanic CC BY-SA 3.0
deleted 16 characters in body; edited tags; edited title
May 18, 2014 at 21:34 answer added user3001408 timeline score: 1
May 18, 2014 at 21:32 answer added EtaZetaTheta timeline score: 0
May 18, 2014 at 21:27 review First posts
May 18, 2014 at 21:45
May 18, 2014 at 21:23 comment added mmesser314 Note that $\frac{d\vec{r_i}}{dt} \times \frac{d\vec{r_i}}{dt} = 0$ because the two sides of the cross product are parallel.
May 18, 2014 at 21:21 history edited Gobiel CC BY-SA 3.0
added 59 characters in body
May 18, 2014 at 21:10 history asked Gobiel CC BY-SA 3.0