Speed:
* Scalar quantity: It only tells you how fast something is moving.
* Magnitude only: It's just a number, like 60 miles per hour.
* Doesn't care about direction: A car traveling 60 mph eastbound has the same speed as a car traveling 60 mph westbound.
Velocity:
* Vector quantity: It tells you both how fast something is moving and in what direction.
* Magnitude and direction: It's described with both a number and a direction, like 60 mph east.
* Direction matters: A car traveling 60 mph eastbound has a different velocity than a car traveling 60 mph westbound.
Analogy:
Imagine you're driving a car. You look at your speedometer and see you're going 60 mph. That's your speed. But you're also heading north. That means your velocity is 60 mph north.
In Summary:
* Speed: How fast.
* Velocity: How fast and in what direction.
