7
lesson pretestMultiple Choice

Pretest

Question 7 • Physics I

How does an object’s motion change as a result of centripetal acceleration?

Answer
A
The speed increases in the same direction.
B
The speed decreases in the same direction.
C
The direction changes along with the speed.
D
The direction changes but not the speed.

Explanation

Centripetal acceleration points toward the center of a circular path and is perpendicular to the object’s instantaneous motion. It changes the direction of the velocity, making the object turn, but does not change its speed. Therefore, the correct choice is “The direction changes but not the speed.”

AI-written and checked against the verified answer.

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