## Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (4th Edition)

(a) $\omega$ is positive and $\alpha$ is positive. (b) $\omega$ is negative and $\alpha$ is positive. (c) $\omega$ is positive and $\alpha$ is negative. (d) $\omega$ is negative and $\alpha$ is negative.
$\omega$ is positive when the object is rotating counterclockwise. $\omega$ is negative when the object is rotating clockwise. $\alpha$ is positive when the angular acceleration is counterclockwise. $\alpha$ is negative when the angular acceleration is clockwise. (a) $\omega$ is positive and $\alpha$ is positive. (b) $\omega$ is negative and $\alpha$ is positive. (c) $\omega$ is positive and $\alpha$ is negative. (d) $\omega$ is negative and $\alpha$ is negative.