SAT Subject Physics Practice Question 635: Answer and Explanation

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Question: 635

1. When can the instantaneous velocity of an object be equal to the average velocity of an object?

A. It can never equal the average velocity.
B. It can only equal the average velocity during acceleration.
C. It can only equal the average velocity when the velocity is constant.
D. It is always equal at the end of a displacement.
E. They are equal at the end of a displacement

Correct Answer: C

Explanation:

The correct answer is (C). The only time the instantaneous velocity of an object equals the average velocity of an object is when the object moves with constant velocity.

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