Here's why that distinction is important:
* Velocity is a combination of speed and direction. So, a change in velocity can be a change in speed, a change in direction, or both.
* Motion is a more general term referring to an object's movement, but it doesn't necessarily imply a change.
Examples:
* A car speeding up is accelerating.
* A car slowing down is accelerating (in the opposite direction of its motion).
* A car turning a corner at constant speed is accelerating because its direction is changing.
* A car moving at a constant speed in a straight line is not accelerating because its velocity is not changing.
Let me know if you have any more questions!
