Answer
$\omega=\frac{\pi}{2}\frac{rad}{s}$
Work Step by Step
We know that $w$ and $f$ are linked by the formula"
$\omega=2{\pi}f$
We plug in the value of $f$ in this formula to obtain:
$\omega=2\pi(0.25)$
$\omega=0.5\pi$
$\omega=\frac{\pi}{2}\frac{rad}{s}$
