Velocity
* Definition: Velocity is a vector quantity, meaning it has both magnitude (how fast) and direction.
* Negative Velocity: A negative velocity simply indicates motion in the opposite direction of whatever you've defined as the positive direction. For example:
* If you define "going east" as positive, then "going west" would be negative.
* If you define "going up" as positive, then "going down" would be negative.
Speed
* Definition: Speed is a scalar quantity, meaning it only has magnitude (how fast).
* No Direction: Speed doesn't care about direction. It's simply the rate at which an object is moving.
* Always Positive: Since speed is just a magnitude, it can't be negative. You can't have a "negative amount of speed".
Analogy
Imagine driving a car.
* Velocity: You could be traveling at 60 miles per hour *east* (positive velocity) or 60 miles per hour *west* (negative velocity).
* Speed: In both cases, your *speed* is 60 miles per hour. It doesn't matter which direction you're going.
Key Point: Velocity is a vector, so it can be negative to indicate direction. Speed is a scalar, so it only represents magnitude and is always positive.
