The athlete needs to change his speed at the corners to keep himself on the track while changing direction.
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The athlete runs at a uniform speed on the straight parts of the track (AB, BC, CD, and DA), but he quickly changes his speed at the corners.
The athlete changes his direction of motion four times while completing one round on the rectangular track.
An example of this situation is a car driving around a circular track at a constant speed. Although the speed (magnitude of velocity) remains the same, the direction of the car’s motion is continuously changing, resulting in acceleration.
Yes, an object can accelerate even if its speed remains constant. This happens when there is a change in the direction of its motion. For example, an object moving in a circular path at a constant speed is accelerating because ...