Answer
$v=30\frac{m}{s}$
Work Step by Step
We know that
$v=\frac{\omega}{K}$
We know that $K=2 0m^{-1}$ and $\omega=600 s^{-1}$.
Plug in these values in the equation above to find $v$:
$v=\frac{600}{20}=30\frac{m}{s}$
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