角速度:\(\omega = \displaystyle \frac{\mathrm{d} \theta }{\mathrm{d} t}\)

角加速度:\(\beta = \displaystyle \frac{\mathrm{d} \omega }{\mathrm{d} t} = \frac{\mathrm{d^{2}} \theta }{\mathrm{d} t^{2}}\)

\(\displaystyle \nu = \omega R, \quad a_n = \frac{v^2}{R} = R \omega ^2, \quad a_\iota = \frac{\mathrm{d} v}{\mathrm{d} x} R \beta\).

其中,\(a_n\) 是法向加速度,\(a_\iota\) 是切向加速度.

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