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2009 Speed And Velocity
 

2009 Speed And Velocity

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    2009 Speed And Velocity 2009 Speed And Velocity Presentation Transcript

      • Notes: Speed and Velocity
      • CW: Motion Graphs
      • H: Pinewood Derby
    • Speed and Velocity February 9, 2009
    • Objectives
      • Define distance, time, speed, and velocity
      • Distinguish between and calculate speed and velocity
      • Explain constant speed and average speed
      • Read a distance time graph
      • Motion is measured by time and distance
    • Distance
      • the separation of two positions
    • Distance
      • Commonly measured in
      • meters
      • kilometers
    • Time
      • the period between two events
    • Time
      • Commonly measured in
      • Seconds
      • Minutes
      • Hours
    • Speed
      • the measure of how fast an object moves as it changes its position
    • Speed
      • Commonly measured in
      • Meters per minute (m/m)
      • Kilometers per hour (km/h)
      • Speed = Distance Time
    • 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
      • speed that does not change
    • Constant Speed
    • Average Speed
      • the total distance traveled divided by the total time of travel
    • Average Speed
    • Speed & Velocity How is speed different from velocity?
    • Velocity
      • describes both the speed and its direction
      • 90 km/h = speed
      • 90 km/h west = velocity