* Speed tells you how fast an object is moving. For example, a car traveling at 60 mph has a certain speed.

* Direction tells you which way the object is moving. For example, a car traveling at 60 mph eastbound has a different velocity than a car traveling at 60 mph northbound.

In simple terms:

* Speed: How fast?

* Velocity: How fast and in what direction?

Example:

* A car traveling at 50 mph to the north has a different velocity than a car traveling at 50 mph to the south, even though they have the same speed.