For example

Look at these two cars. They both are going to travel a certain distance.

Different average speeds

Both cars are going to travel a total distance of 4 miles but they both may not reach the destination at the same time.

Different Speeds

One driver may drive slower or faster than the other driver.

Different speeds during journey

The drivers may not drive at the same speed throughout the entire 4 miles. Maybe one went 40 miles per hour for the first two miles then went 60 miles per hour for the last 2 miles.

Calculating Average Speed

To calculate the average speed of an object you need to use the avearge speed formula.

Average Speed Formula

The S stands for Average speed

The D stands for Distance

The T stands for Time

Using the avearge speed formula

To calculate the average speed of an object you need to DIVIDE the distance an object traveled by the time. The distance number goes in the calulator first.

Lets practice calculating average speed

Use a calculator(such as Desmos or Google Calculator) to help you!

Finding the time

Look at the graph and notice that time numbers are found on the bottom of the graph. The highest time number is 7 seconds.

Velocity

By Mrs. Greco