A conceptual question: A car travels in a circular path with constant speed. Which of the following quantities is constant and non-zero for this car? a.) linear velocity b.) angular velocity c.) centripetal acceleration d.) angular acceleration e.) total acceleration The answer is b.) angular acceleration, but why? I figured it would have to be linear velocity, because ang velocity=v/r and isn't the r of a circular path going to be constant? So how can angular velocity be constant without the linear velocity constant?