Velocity is a vector quantity that describes both an object's speed and its direction of motion.

Here's why it's important to consider both:

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

* Direction tells you which way the object is moving. For example, the car is traveling north.

Velocity combines both to give a complete picture of the object's motion. For instance, the car's velocity could be described as "60 mph north."

Let me know if you'd like to explore examples or other aspects of velocity!