Calculate the speed of each runner from the graph in figure 3.14

To calculate the speed of each runner from the graph in figure 3.14, you need to determine the distance covered and the time taken for each runner.

Here's how you can do it:

1. Look at the graph in figure 3.14 and note the distance covered by each runner. The distance is usually represented on the y-axis of the graph.

2. Next, observe the time taken by each runner. The time is usually represented on the x-axis of the graph.

3. Calculate the time difference between the starting point and the ending point for each runner. This will give you the time taken to cover the distance.

4. Divide the distance covered by the time taken for each runner. This will give you the speed of each runner.

For example, let's say Runner A covers a distance of 400 meters and takes 50 seconds to complete the race. To calculate their speed:

Speed = Distance / Time

Speed = 400 meters / 50 seconds

Speed = 8 meters per second

Repeat this calculation for each runner using their respective distance and time values from the graph.