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In uniform circular motion, which of the following is true?

1. Velocity and acceleration remain constant
2. Kinetic energy remains constant
3. Speed and acceleration change
4. Only velocity changes, acceleration remains constant

Correct answer: Kinetic energy remains constant

Solution

In uniform circular motion, speed remains constant, so kinetic energy, which depends on speed, also remains constant. Velocity changes because its direction changes continuously, and acceleration is present due to this change in direction.

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