Speed
* Scalar: Speed only describes how fast an object is moving. It's a single number with units like meters per second (m/s) or kilometers per hour (km/h).
* Example: A car traveling at 60 km/h has a speed of 60 km/h, regardless of its direction.
Velocity
* Vector: Velocity describes both the speed *and* direction of an object's motion. It requires both magnitude (speed) and direction.
* Example: A car traveling at 60 km/h *east* has a velocity of 60 km/h east. If it turns and travels at 60 km/h *north*, its velocity has changed, even though its speed remains the same.
Key Differences
* Direction: Velocity includes direction, while speed does not.
* Representation: Velocity is represented graphically as an arrow (magnitude = length, direction = arrowhead), while speed is a simple number.
In Summary:
* Speed: How fast something is moving.
* Velocity: How fast something is moving *and* in what direction.
