Average velocity is defined as

• A. Distance divided by time
• B. Displacement divided by time
• C. Time divided by displacement
• D. Speed divided by velocity

Answer: (B)

Average velocity tells you how much your position changes per unit time, including the direction. It is defined as the displacement divided by the time interval. Displacement is the straight‑line change in position from start to finish, not the total distance traveled, so this quantity carries direction as a vector. Because velocity includes direction, using displacement over time gives a measure with both magnitude and direction. Using distance over time would describe average speed, which has only magnitude and no direction, and other expressions don’t correspond to a rate of change in position.