SAT Subject Physics Practice Question 362: Answer and Explanation
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.