Speed
* Definition: Speed is how fast an object is moving. It tells you the *rate* at which an object covers distance.
* Units: Typically measured in units like miles per hour (mph), kilometers per hour (km/h), or meters per second (m/s).
* Scalar Quantity: Speed is a scalar quantity, meaning it only has magnitude (amount).
* Example: A car traveling at 60 mph.
Velocity
* Definition: Velocity is a more complete description of motion. It tells you how fast an object is moving *and* in what direction.
* Units: Same as speed (mph, km/h, m/s).
* Vector Quantity: Velocity is a vector quantity, meaning it has both magnitude and direction.
* Example: A car traveling at 60 mph *eastward*.
Key Differences
* Direction: Speed doesn't care about direction, while velocity does.
* Changes in Direction: If an object changes direction, its velocity changes even if its speed remains constant.
Example:
* Scenario: Imagine a car driving around a circular track at a constant speed of 50 mph.
* Speed: The car's speed is constant at 50 mph.
* Velocity: The car's velocity is constantly changing because its direction is constantly changing.
In summary:
* Speed is how fast something is moving.
* Velocity is how fast something is moving *and* in what direction.
