* Speed: While speed tells you how fast something is moving, it doesn't tell you the direction. Velocity needs both speed and direction. For example, "50 mph" is a speed, but not a velocity.
* Distance: Distance is the total length traveled, without regard for direction. A car driving 10 miles is a distance, not a velocity.
* Displacement: Displacement is the change in position from the starting point to the ending point. While it considers direction, it doesn't include the time it took to travel, which is crucial for velocity.
* Acceleration: Acceleration is the rate of change of velocity. It describes how velocity changes over time, not the velocity itself.
In short, anything that doesn't describe both the speed and direction of an object is not a velocity.
