1. Acceleration & Speed How fast does it go?

2. Definition of Motion Event that involves a change in the position or location of something.

3. Speed Comparison of time and distance –Distance traveled per unit time

4. Average Speed Speed over a period of time

5. Speed Instantaneous Speed Speed at any instant

6. Speed Constant Speed Speed that does not change –Instantaneous speed that does not change

7. Velocity Speed AND direction

8. Acceleration A change in velocity –Speeding up Positive acceleration –Slowing down Negative acceleration Deceleration –Changing direction

9. Calculating Speed Given Distance & Time Divide Distance by Time Distance ÷ Time = Speed Speed = Distance ÷ Time D ST Speed = Distance Time

10. Let’s Practice Solve for Speed A runner completes a 400m race in 43.9s. What was his speed? Speed = Distance Time Speed = 400m 43.9s Speed =9.1m/s 2

11. Let’s Practice Solve for Speed A runner runs a 100m race in 10s. What is his speed? Speed = Distance Time Speed = 100m 10s Speed = 10m/s 2

12. Calculating Distance Given Speed & Time Multiply Speed and Time Distance = Speed X Time Speed X Time = Distance D ST Distance =Speed Time

13. Calculating Time Given Distance and Speed Divide Distance by Time Distance ÷ Speed = Time Time = Distance ÷ Speed D ST Time = Distance Speed

14. Calculating Acceleration Acceleration Equation Acceleration = (final speed (in m/s) – initial speed (in m/s)) Time (in seconds) A= (s f -s i ) t