Speed
* Definition: Speed is the rate at which an object moves. It is a scalar quantity, meaning it only has magnitude (size).
* Units: Common units of speed include meters per second (m/s), kilometers per hour (km/h), and miles per hour (mph).
* Example: A car traveling at 60 mph has a speed of 60 mph.
Velocity
* Definition: Velocity is the rate at which an object changes its position. It is a vector quantity, meaning it has both magnitude and direction.
* Units: Same as speed (m/s, km/h, mph).
* Example: A car traveling at 60 mph eastward has a velocity of 60 mph eastward.
Key Differences
* Direction: Speed does not consider direction, while velocity does.
* Change: Velocity can change even if speed remains constant. For example, a car traveling in a circle at a constant speed is still accelerating because its direction is changing.
In Summary
* Speed tells you how fast something is moving.
* Velocity tells you how fast something is moving and in what direction.
Think of it this way:
* If you're driving on a highway, your speedometer shows your speed.
* Your velocity would be your speed combined with the direction you're traveling (e.g., 60 mph north).
