In a uniform circular motion, which of the following quantities remains constant

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Question: In a uniform circular motion, which of the following quantities remains constant?

Options:

Correct Answer: Speed

Solution:

In uniform circular motion, speed remains constant while velocity and acceleration change direction.

In a uniform circular motion, which of the following quantities remains constant?

In a uniform circular motion, which of the following quantities remains constant?

Step 1: Understand what uniform circular motion means. It is when an object moves in a circle at a constant speed.
Step 2: Identify the key quantities involved: speed, velocity, and acceleration.
Step 3: Recognize that speed is the distance traveled per unit of time and does not change in uniform circular motion.
Step 4: Understand that velocity includes both speed and direction. Since the direction of the object is constantly changing in a circle, the velocity is not constant.
Step 5: Know that acceleration is the change in velocity. In circular motion, even though speed is constant, the direction of velocity changes, which means there is acceleration acting towards the center of the circle.
Step 6: Conclude that in uniform circular motion, the only quantity that remains constant is speed.

Uniform Circular Motion – In uniform circular motion, an object moves in a circular path at a constant speed, but its velocity and acceleration are continuously changing due to the change in direction.
Speed vs. Velocity – Speed is a scalar quantity that remains constant in uniform circular motion, while velocity is a vector quantity that changes due to direction change.
Centripetal Acceleration – In uniform circular motion, there is always centripetal acceleration directed towards the center of the circle, which indicates that acceleration is not constant.