Therefore, to know the velocity of something, you need to know:

* Speed: How fast it is moving (e.g., 10 meters per second).

* Direction: The direction it is moving in (e.g., north, south, east, west, or at a specific angle).

For example:

* Speed: A car is traveling at 60 miles per hour.

* Velocity: A car is traveling at 60 miles per hour eastbound.

Let me know if you have any other questions!