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SAT® Subject Test in Physics

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Moderate

Tiring Acceleration

SATPHY-4Y5GPF

The tire pictured below is rolling to the left at a constant speed without slipping on a horizontal roadway.

What is the direction of the acceleration of the part of the tire that is in contact with the road?

A

Left.

B

Right.

C

Up.

D

Down.

E

The acceleration of this part of the tire is zero.