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Speed and Motion

Speed and Motion. Chapter 1.1 (pages 16-25). Motion. An object has motion when the distance from another is changing. Depends on point of view. Use a reference point to describe an objects motion. Examples include a bike, dog running …. Speed. Speed = Distance Time

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Speed and Motion

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  1. Speed and Motion • Chapter 1.1 (pages 16-25)

  2. Motion • An object has motion when the distance from another is changing. • Depends on point of view. • Use a reference point to describe an objects motion. • Examples include a bike, dog running ….

  3. Speed • Speed = Distance • Time • Speed is how far something travels in a given amount of time.

  4. Average Speed • Adding the distances and times and dividing by the number of trials. • More accurate number.

  5. Velocity • Speed in a given direction. • 30 miles per hour North • Similar to speed

  6. Motion Graphs • Increasing Speed - Up the right • Decreasing Speed - downward angle • No motion - flatline - resting period

  7. WHEN IS AN OBJECT IN MOTION? • When its direction and time change.

  8. SPEED VS VELOCITY • Velocity describes speed in a given direction • Example: a storm is traveling at 25 km/h westward

  9. Answers 3-4 • 3. Speed of plant growth 3.75 cm/hour • 4a. 170 m/min • 4b. There is a flat-line graph • 4c. The slope of the line is less than in the first graph = 100 m/min

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