Physics

Problem

State the correct expression for the average angular velocity

\omega_{\mathrm{avg}}

of a body that turns through an angular displacement

\Delta\theta

in a time

\Delta t

. a)

\displaystyle \omega_{\mathrm{avg}} = \frac{\omega_i+\omega_f}{2}

\displaystyle \omega_{\mathrm{avg}} = \frac{\Delta\theta}{\Delta t}

\displaystyle \omega_{\mathrm{avg}} = \frac{d\theta}{dt}

\displaystyle \omega_{\mathrm{avg}} = \frac{\Delta t}{\Delta\theta}