##### Asked by: Liguo Jaescke

asked in category: General Last Updated: 29th April, 2020# Why is speed and velocity important?

**speed and velocity important**? Because they tell us how quickly an object can travel a given distance. How fast you reach some place is very

**important**, and that is what

**speed and velocity**tell us.

Just so, why is velocity more important than speed?

In physics, **velocity** is **more important than speed** because it tells you **more** about the object's motion. Always, the **more** you know, the better. Again, **speed** has no direction, **velocity** does. **Speed** is the magnitude of the **velocity**.

Likewise, is mph a velocity or speed? **Velocity** is **speed** with a direction. So if something is moving at 5 **mph** that is a **speed**. But if you say it is moving at 5 **mph** westwards that is a **velocity**.

Also know, how is speed related to velocity?

**Speed**, being a scalar quantity, is the rate at which an object covers distance. The average **speed** is the distance (a scalar quantity) per time ratio. On the other hand, **velocity** is a vector quantity; it is direction-aware. **Velocity** is the rate at which the position changes.

What is the SI unit for speed?

**Units** of **speed** include: metres per second (symbol m s^{−}^{1} or m/s), the **SI** derived **unit**; kilometres per hour (symbol km/h); miles per hour (symbol mi/h or mph);