A ball rolls on the ground at a speed of 3.0 m/s without slipping. If the radius of the ball is 10 cm, what is the angular speed of the ball?
A) 30 rad/s
B) 0.30 rad/s
C) 90 rad/s
D) 3.3 rad/s

Question

Quizplus · Accepted Answer

The angular speed $\omega$ can be found using the relation $\omega = \frac{v}{r}$, where $v = 3.0 \, \text{m/s}$ is the linear speed and $r = 0.1 \, \text{m}$ is the radius. Thus, $\omega = \frac{3.0}{0.1} = 30 \, \text{rad/s}$.

A Ball Rolls on the Ground at a Speed of 3.0