* Velocity is a vector: This means it has both magnitude (speed) and direction.
* Average velocity considers displacement: Average velocity is calculated by dividing the total displacement by the total time taken. Displacement is the change in position, measured as a straight line between the starting and ending points.
* Returning to the starting point: If an object starts at a point, moves around, and ends up back at its original starting point, its total displacement is zero. Since displacement is zero, the average velocity will also be zero, even if the object traveled a significant distance.
Example:
Imagine a runner completing a lap around a circular track.
* They start and end at the same point, so their displacement is zero.
* Even though they were moving at a certain speed, their average velocity for the entire lap is zero.
Key takeaway: Average velocity is zero when the object ends up at the same position it started, regardless of the distance covered or the speed during the journey.