<ul><li>Notes: Speed and Velocity </li></ul><ul><li>CW: Motion Graphs </li></ul><ul><li>H: Pinewood Derby </li></ul>
Speed and Velocity February 9, 2009
Objectives <ul><li>Define distance, time, speed, and velocity </li></ul><ul><li>Distinguish between and calculate speed an...
<ul><li>Motion is measured by time and distance </li></ul>
Distance <ul><li>the separation of two positions </li></ul>
Distance <ul><li>Commonly measured in </li></ul><ul><li>meters  </li></ul><ul><li>kilometers </li></ul>
Time <ul><li>the period between two events   </li></ul>
Time <ul><li>Commonly measured in </li></ul><ul><li>Seconds </li></ul><ul><li>Minutes </li></ul><ul><li>Hours </li></ul>
Speed <ul><li>the measure of how fast an object moves as it changes its position   </li></ul>
Speed <ul><li>Commonly measured in </li></ul><ul><li>Meters per minute (m/m) </li></ul><ul><li>Kilometers per hour (km/h) ...
<ul><li>Speed =  Distance   Time </li></ul>
Speed Time = 0 seconds meters 25 20 30 15 35 10 5 0
Speed Time = 5 seconds meters 25 20 30 15 35 10 5 0
Speed Time = 10 seconds meters 25 20 30 15 35 10 5 0
Speed Time = 15 seconds meters 25 20 30 15 35 10 5 0
Constant Speed   <ul><li>speed that does not change   </li></ul>
Constant Speed
Average Speed <ul><li>the total distance traveled divided by the total time of travel </li></ul>
Average Speed
Speed & Velocity  How is speed different  from velocity?
Velocity <ul><li>describes both the speed and its direction </li></ul><ul><li>90 km/h = speed </li></ul><ul><li>90 km/h we...
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2009 Speed And Velocity

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2009 Speed And Velocity

  1. 1. <ul><li>Notes: Speed and Velocity </li></ul><ul><li>CW: Motion Graphs </li></ul><ul><li>H: Pinewood Derby </li></ul>
  2. 2. Speed and Velocity February 9, 2009
  3. 3. Objectives <ul><li>Define distance, time, speed, and velocity </li></ul><ul><li>Distinguish between and calculate speed and velocity </li></ul><ul><li>Explain constant speed and average speed </li></ul><ul><li>Read a distance time graph </li></ul>
  4. 4. <ul><li>Motion is measured by time and distance </li></ul>
  5. 5. Distance <ul><li>the separation of two positions </li></ul>
  6. 6. Distance <ul><li>Commonly measured in </li></ul><ul><li>meters </li></ul><ul><li>kilometers </li></ul>
  7. 7. Time <ul><li>the period between two events </li></ul>
  8. 8. Time <ul><li>Commonly measured in </li></ul><ul><li>Seconds </li></ul><ul><li>Minutes </li></ul><ul><li>Hours </li></ul>
  9. 9. Speed <ul><li>the measure of how fast an object moves as it changes its position </li></ul>
  10. 10. Speed <ul><li>Commonly measured in </li></ul><ul><li>Meters per minute (m/m) </li></ul><ul><li>Kilometers per hour (km/h) </li></ul>
  11. 11. <ul><li>Speed = Distance Time </li></ul>
  12. 12. Speed Time = 0 seconds meters 25 20 30 15 35 10 5 0
  13. 13. Speed Time = 5 seconds meters 25 20 30 15 35 10 5 0
  14. 14. Speed Time = 10 seconds meters 25 20 30 15 35 10 5 0
  15. 15. Speed Time = 15 seconds meters 25 20 30 15 35 10 5 0
  16. 16. Constant Speed <ul><li>speed that does not change </li></ul>
  17. 17. Constant Speed
  18. 18. Average Speed <ul><li>the total distance traveled divided by the total time of travel </li></ul>
  19. 19. Average Speed
  20. 20. Speed & Velocity How is speed different from velocity?
  21. 21. Velocity <ul><li>describes both the speed and its direction </li></ul><ul><li>90 km/h = speed </li></ul><ul><li>90 km/h west = velocity </li></ul>
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