1. Distance time graphs

2. What is speed?

3. How to we measure speed? What do we need to measure?
What units do we use?
Do we always use the same units?

4. Measuring our speed We need to know the distance
We need to know the time it takes to move this distance
Speed = distance ÷ time

5. Distance m
Time s
Speed =
Distance ÷
Time =
m/s

6. Motion graphs

7. Graphshots

8. Distance-time graphs on an obstacle course
Time (s)
Distance (m)

9. Name
Mr Butler
Time (s) 20 40 80
120
150
180
190
Distance (m) 10 30 50 60 70

10. Calculating your speed on a distance-time graph
Distance = 20m
Time =60s
To calculate speed at the fastest point
Look for the steepest line
Mark the start and end
Work out the distance and time
Use the speed equation to calculate speed Speed = distance ÷ time

11. Your graph Mark on the graph where your speed was highest and lowest
Explain how you create a motion graph of someone running
Explain how you work out the speed of a person