SAT Subject Physics Practice Question 362: Answer and Explanation

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Question: 362

58. An object that is placed on the edge of a constant speed turntable has

A. constant linear velocity.
B. tangential acceleration.
C. centripetal acceleration.
D. centrifugal acceleration.
E. no acceleration.

Correct Answer: C


The correct answer is (C). An object that is turning undergoes a change in direction. The change in direction is a change in velocity. A change in velocity through a period of time is acceleration. Because the acceleration is directed inward toward the center of rotation, this is a centripetal acceleration.

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