Here's the formula:

Speed = Distance / Time

Let's break it down:

* Distance: This is how far something travels. It can be measured in meters, kilometers, miles, feet, etc.

* Time: This is how long it takes to travel that distance. It can be measured in seconds, minutes, hours, etc.

Example:

Imagine a car travels 100 kilometers in 2 hours. To calculate the car's speed, we would:

1. Distance: 100 kilometers

2. Time: 2 hours

3. Speed = Distance / Time = 100 kilometers / 2 hours = 50 kilometers per hour

Important Notes:

* Units: It's important to use consistent units for distance and time when calculating speed. For instance, if distance is in meters and time is in seconds, the speed will be in meters per second.

* Average Speed: The calculation above gives you the average speed over the entire journey. The object may have traveled at different speeds during that time.

* Instantaneous Speed: This refers to the speed of an object at a specific moment in time. It's like looking at the speedometer in a car.

Let me know if you'd like more examples or want to explore different ways of measuring speed!