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Motion

Motion. Essential Question: How is motion defined?. Distance. The length along a path traveled between two points. An object in motion travels a distance. You and your friend are riding on a bus. Is your friend moving compared to:. you?. someone standing on the sidewalk?.

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Motion

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  1. Motion Essential Question: How is motion defined?

  2. Distance The length along a path traveled between two points.

  3. An object in motion travels a distance.

  4. You and your friend are riding on a bus.

  5. Is your friend moving compared to: • you? • someone standing on the sidewalk? • the ground? • the Earth?

  6. Motion is a change in position compared to something stationary. Motion takes time. Mrs. Cecil is cool.

  7. Whenever you say “something ismoving”, you have to compare it to something that is _______________________ stationary. This something (an object) is called a _______ ____ or (background) a ____ __ ________. reference point frame of reference

  8. Reference Point A stationary object used to determine motion.

  9. Frame of Reference A group of fixed points used to determine motion.

  10. We can CALCULATE how fast (or how slow) an object travels if we know the distance it traveled and the time it took to move that distance. Speed

  11. Speed = Distance Time

  12. S = D T 6 = 12 2 D = T x S 6 = 12 2 D S T =

  13. Average vs. Constant Speed Visalia 250 km

  14. Total Distance = Ave. Speed Total Time 250 km= 50 km/hr 5 hours

  15. What is your average speed if you travel 1200 km in 32 hours?

  16. 1200 km = 32 hours 37.5 km/hr

  17. How far can a person run in 20 seconds at a constant speed of 25 m/sec?

  18. 25 m/sec X 20 sec = 500 m

  19. How long would it take to walk 86 km at a constant speed of 6km/hr?

  20. 86 km = 6km/hr 14.33 hours

  21. D C B A

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