Please Help

[Venom]

Please Help

 

[topsquark]

Please Help

Please help with what? You didn't say where you are having a problem.

To start you off, here are some definitions:
[math]\textbf{v}(t) = \dfrac{d \textbf{r} }{dt}[/math]
[math]\textbf{a}(t) = \dfrac{d \textbf{v} }{dt}[/math]
Arc length s:
[math]s = \int _a^b \sqrt{ 1 + \left ( \dfrac{d \textbf{r} }{dt} \right )^2 } ~ dt = \int _a^b \sqrt{1 + \textbf{v} ^2} ~ dt[/math]
-Dan