Table of Contents

**Table of Contents**

- Velocity – Definition
- Velocity Unit
- Calculating Average Velocity
- Summary
- Did You Know?
- What’s Next?

In our previous segment, we learned about **Uniform and Non-Uniform motion. **In this segment, we will learn about velocity and how to calculate it.

## What is Velocity?

Velocity is defined as the speed of a body along a specific direction.

We know that speed is the amount of distance covered in a given amount of time. If a car travels at a speed of ‘50 meters per second’, for one minute, the total distance it covers turns out to be 3000 meters. But we do not know the direction in which the car traveled, nor its position.

In another case, a car travels at ‘50 meters per second’ for one minute in the north direction. From this we can say that the car traveled 3000 meters in the north direction. This way we can find the speed as well as the direction of that car. Hence, we can say that 50 m/s in the north direction is the Velocity of this car.

## What is the Unit of velocity?

The established SI unit for Velocity is the same as that of speed. That is **meters per second**. The difference between Velocity and Speed is that speed has no direction while Velocity does.

## How to calculate average velocity?

The average velocity depends on the start and endpoints, regardless of the path taken. Hence, the average velocity equals displacement over time.

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