1. Distance Time Graphs

2. Learning Tweet To understand how to plot and read Distance-Time Graphs To understand the relationship between velocity and distance time graphs

3. Measuring Distance Metre – international unit for measuring distance. = 50 m 1 mm

4. Calculating Speed Speed (S) = distance traveled (d) / the amount of time it took (t). S = d/t

5. Calculating speed If I travel 100 kilometre in one hour then I have a speed of… 100 km/h If I travel 1 metre in 1 second then I have a speed of…. 1 m/s S = d/t

6. Calculating Average Speed It took 1 hour to go 40 km on the motorway. Then it took me 2 more hours to go 20 km using the streets. Total Distance: 40 km + 20 km = 60 km Total Time: 1 h + 2 h = 3 hr Ave. Speed: total dist/total time = 60 km/3 h = 20 km/h

7. Distance Time

8. Velocity Velocity – the SPEED and DIRECTION of an object. Example: An plane moving North at 500 mph A missile moving towards you at 200 m/s

9. Learning Tweet Momentum Know that Momentum is mass (kg) x Velocity (m/s) Explain a force acting for a certain time causes a change in momentum

10. Velocity – Speed

11. Velocity –time graph Slope = acceleration

12. A-B= steady acceleration B= steady speed C= steady de-cceleration