1. The Language of Motion

2. Vectors versus Scalars Scalars: Include magnitude but not direction – Eg. 100km/h (which way?) Vectors:

3. Vectors versus Scalars Scalars: Include magnitude but not direction – Eg. 100km/h (which way?) Vectors: Includes magnitude and direction – Eg 100km/h West, 100 km/h [W]

4. Distance versus Position Distance (d): How far you travelled. Does not include direction (scalar) – eg. 45km or 60m Position (d):

5. Distance versus Position Distance (d): How far you travelled. Does not include direction (scalar) – eg. 45km or 60m Position (d): Describes the where you are relative to a reference point. Includes direction (vector) – Eg. 45km East or 60m (W)

6. Example of Distance and Position Distance (How far did the ship travel): Position (How far is the ship from the dock):

7. Example of Distance and Position Distance (How far did the ship travel): 12km Position (How far is the ship from the dock): 8km

8. Time Time(t): Describes when something occurs Two times in physics Initial Time: Final Time : Time interval:

9. Time Time(t): Describes when something occurs Two times in physics Initial Time: When the event begins – Eg class starts at 9:00 Final Time : When the event ends – Eg class ends at 10:30 Time interval:

10. Time Time(t): Describes when something occurs Three times in physics Initial Time: When the event begins – Eg class starts at 9:00 Final Time : When the event ends – Eg class ends at 10:30 Time interval: How much time the event took up. The difference between the initial and final time 10:30 – 9:00 = 1:30 the time interval was 1 hour and 30 min

11. The symbol for change Δ Time interval= change in time = Δt

12. SI units (Standard units) Time = s Distance = m

13. Calculating time intervals 1) Find the initial time and the final time. 2) Subtract the initial time from the final time Eg

14. Calculating time intervals 1) Find the initial time and the final time. 2) Subtract the initial time from the final time Tf - Ti = ΔT Eg 5s – 2s = 3s Time interval = 3s

15. Displacement and Distance Displacement (Δd): the straight line distance and direction between two points. Eg Δd = df - di =

16. Displacement and Distance Displacement (Δd): the straight line distance and direction between two points. Eg Δd = df - di = 3m(E) – 2m (W) East is considered + West is considered – 3m - (-2m) = 5m

17. Positive directions versus Negative directions Positive: up and north east and right Negative: down and south west and left

18. Uniform Motion Uniform Motion: Motion that does not change. Do not speed up or slow down. Graphing uniform motion: Next class