In circular motion

PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Torque and Rotational Dynamics · Torque and Rotational Dynamics

Problem

In circular motion, what are the possible values (zero, positive, or negative) of the following? (a)

\boldsymbol{\omega}\cdot\mathbf{v}

(b)

\mathbf{v}\cdot\mathbf{a}

(c)

\boldsymbol{\omega}\cdot\boldsymbol{\alpha}