An object that’s moving with constant speed travels once...

Name: Problem 1, Chapter 3: Cracking The AP Physics 1 Exam
Uploaded: 2020-12-02T14:55:12-08:00
Duration: 3 min 33 s
Channel: Khoobchandra Agrawal
Description: An object that’s moving with constant speed travels once around a circular path. Which of the following statements are true concerning this motion? Select two answers. (A) The displacement is zero. (B) The average speed is zero. (C) The acceleration is zero. (D) The velocity is changing.

An object that’s moving with constant speed travels once around a circular path. Which of the following statements are true concerning this motion? Select two answers. (A) The displacement is zero. (B) The average speed is zero. (C) The acceleration is zero. (D) The velocity is changing.

An object that’s moving with constant speed travels once around a circular path. Which of the following statements are true concerning this motion? Select two answers.
(A) The displacement is zero.
(B) The average speed is zero.
(C) The acceleration is zero.
(D) The velocity is changing.

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Key Concepts

Displacement

Displacement refers to the net change in an object's position from its starting point to its final position. In scenarios where an object returns to its original location, the displacement is zero, even though the object may have traveled a considerable distance along its path.

Average Speed

Average speed is defined as the total distance traveled divided by the total time taken. Even if an object travels in a closed loop, where its displacement may be zero, the average speed does not become zero because the object has covered a nonzero distance over time.

Uniform Circular Motion

Uniform circular motion describes the motion of an object traveling at constant speed along a circular path. Despite the constant speed, the object's velocity—which is a vector quantity—is always changing direction, which results in a continuous change in velocity.

Acceleration

Acceleration is the rate of change of velocity. In uniform circular motion, even though the speed is constant, there is a continuous change in the direction of the velocity vector. This change results in centripetal acceleration, which is directed towards the center of the circular path.

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