Motion, Velocity, and Acceleration - Book M, Chap. 1.1

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PowerPoint presentation for our first textbook section that includes information and formulas for speed, velocity, and acceleration.

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Motion, Velocity, and Acceleration - Book M, Chap. 1.1

  1. 1. Warm-Up Aug. 24,2011Identify at least 3 moving objects that you can observe from your seat.
  2. 2. Reference Points TourObject in Motion Reference Point
  3. 3. Warm-UpAug. 25,2011
  4. 4. How could we connect this to moving objects and reference points?
  5. 5. Measuring Motion Chapter 1, Section 1 Determining Speed
  6. 6. Who’s Faster?
  7. 7. Who’s Faster? 100 meters 10 seconds 100 meters 15 seconds
  8. 8. Who’s Faster? 100 meters 10 seconds 100 meters 15 seconds
  9. 9. Who’s Faster? 100 meters 10 seconds 150 meters 10 seconds
  10. 10. Who’s Faster? 100 meters 10 seconds 150 meters 10 seconds
  11. 11. Who’s Faster? 180 meters 10 seconds 160 meters 8 seconds
  12. 12. Who’s Faster? Speed = distance/time 180 meters 10 seconds = 180m 10 s 160 meters = 160m 8 seconds 8s
  13. 13. Who’s Faster? Speed = distance/time 180 meters 10 seconds = 180m 18 m/s 10 s 160 meters = 160m 20 m/s 8 seconds 8s
  14. 14. Speed or Velocity?Speed – the rate at which an object moves how fast an object moves 15 m/s (meters per second)Velocity – an object’s speed in a specific direction how fast AND which way an object moves 5 m/s north
  15. 15. Speed or Velocity?20 m/s - Speed17 m/s east - Velocity100 m/s up – Velocity0.15 m/s - Speed
  16. 16. Formula TriangleSpeed = distance/time D S X T
  17. 17. Warm-Up Aug. 26,2011 Fill in the triangle with the formula for speed. What is the velocity of a car thattraveled 252 miles East in 4 hours?
  18. 18. Speed = Distance/Time D S TWhat is the velocity of a car thattraveled 252 miles E in 4 hours? Distance 252 mi. = 63 mph E Time 4 hr.
  19. 19. Acceleration• Acceleration – The rate at which velocity changes A change in velocity (Speed or Direction) Examples: Speeding up- A plane taking off Slowing down- A car stopping at a red light Changing direction – A car turning at a corner
  20. 20. Determining AccelerationAcceleration = final velocity – initial velocity time Vf - Vi A T
  21. 21. Warm-Up Aug. 29,2011 What two factors determine an object’s speed? Distance and TimePractice Problem:What is the velocity of a runner traveling 35 meters North in 7 seconds? Speed = Distance = 35 m = 5 m/s Time 7s
  22. 22. Graphing Velocity
  23. 23. Constant Velocity vs. Acceleration

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