Speed is a scalar quantity that describes how fast an object is moving. It is defined as the rate of change of distance traveled over time.
Formula: Speed = Distance / Time
Units: Meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), etc.
Example: A car traveling at 60 mph means it covers 60 miles every hour.
Velocity, on the other hand, is a vector quantity that describes both how fast an object is moving and in what direction. It is defined as the rate of change of displacement over time.
Formula: Velocity = Displacement / Time
Units: Meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), etc., with a specified direction.
Example: A car traveling at 60 mph east means it covers 60 miles every hour in the eastward direction.
Key Differences:
* Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).
* Speed measures the total distance traveled, while velocity measures the displacement, which is the change in position from the starting point.
In summary:
* Speed tells us how fast something is moving.
* Velocity tells us how fast something is moving and in what direction.
