- #1

dalitwil

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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?