science
Grade-9
Easy
Question
Which of the following is constant during a uniform circular motion?
- Speed
- Velocity
- Acceleration
- Displacement
Hint:
Speed
The correct answer is: Speed
The speed of an object remains the same in uniform circular motion whereas acceleration, displacement, and velocity will change as they all depend on the direction of the motion.
Justification:
As the initial and final points are changing continuously even after one revolution they are the same hence the displacement is not constant.
Due to changes in displacement, the velocity will also change. as velocity = displacement / time
Due to a change in velocity, the acceleration will also change. Acceleration = change in velocity/ time taken.
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