Answer
$\omega=4\times10^2\frac{1}{s}$
Work Step by Step
We can find the angular frequency as:
$v=x\omega$
This can be rearranged as:
$\omega=\frac{v}{x}$
We plug in the known values to obtain:
$\omega=\frac{16}{0.04}=4\times10^2\frac{1}{s}$