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AP® Physics 1 & 2

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Moderate

Angular Acceleration of a Car Tire

APPH12-VP4ZTX

You are driving down the road at a constant linear velocity of $32\text{ m/s}$. All of a sudden, a raccoon starts crossing the road in front of you. Being the raccoon enthusiast that you are, you slam on the brakes in an attempt to save the raccoon's life. You come to a stop in $4.25 \text{ s}$.

If the car tires have a diameter of $60\text{ cm}$, what is the angular acceleration of the tires?

A

$25\text{ rad/s}^2$

B

$-25\text{ rad/s}^2$

C

$12.5\text{ rad/s}^2$

D

$-12.5\text{ rad/s}^2$