Question:
In uniform circular motion, which one of the following properties changes with time?
In uniform circular motion, which one of the following properties changes with time?
Show Hint
If the direction changes, any vector quantity (Velocity, Momentum, Acceleration) is "changing."
Updated On: May 13, 2026
- Momentum
- Speed
- Mass
- Kinetic Energy
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Verified By Collegedunia
The Correct Option is A
Solution and Explanation
Step 1: Concept
Uniform circular motion implies constant speed but a continuously changing direction of velocity.
Step 2: Meaning
Scalar quantities like speed and kinetic energy ($1/2 mv^2$) depend only on magnitude, which remains constant here.
Step 3: Analysis
Momentum ($p = mv$) is a vector quantity. Even though the mass ($m$) and the magnitude of velocity ($v$) are constant, the direction of the velocity vector is always changing.
Step 4: Conclusion
Because the direction of the vector changes at every point in the circle, the momentum is considered to be changing with time. Final Answer: (A)
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