2. Motion & Graphs Motion graphs are an important tool used to show relationships between position, speed and time. It’s an easy way to see how speed or position change over time

3. Distance vs. Time Graph Shows an object’s position at a given time. Time: on X-Axis Distance: on Y-Axis

4. You Try It Graph the following data Time (s)Distance (m) 00 1050 20100 30150

5. Time (s) Distance (m) 0 10 20 30 150 60 30 0 90 120    

6. This graph shows constant speed. Whenever there is a straight line, the speed stays the same.

7. Slope A bigger (steeper) slope means a faster speed.

8. Steeper Slope = Faster Speed

10. Acceleration A change in speed or direction – Speeding up – Slowing down – Turning

11. Constant Acceleration TimeDistance 0 s0m 1 s2m 2 s8m 3 s18m 4s32m 5s50m

12. Time (s) Distance (m) 0 1 2 3 4 5 50 20 10 0 30 40      

13. This graph shows constant acceleration. This means that the object is always accelerating.

14. Predict: What does THIS GRAPH show?

15. The straight line means its position is not changing The straight line means its position is not changing

17. a. The person stopped for five seconds. b. The person ran back to the start in 2.5 seconds. c. The person ran 5 meters in 5 seconds. b. The person ran back to the start in 2.5 seconds. a. The person stopped for five seconds. c. The person ran 5 meters in 5 seconds.