Friction

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Friction

  1. 1. Guide questions What is friction? What are the types of friction? How do they differ from each other? How do we describe friction?
  2. 2. Guide questions What is air resistance? How does a body attain terminal velocity? How do we increase/decrease friction?
  3. 3. Key terms Friction force (Ff) – a force that tends to oppose motion Coefficient of friction (µ) – the ratio of the friction force to the normal force
  4. 4. Key terms Static friction – the type of friction that exists between the contact surfaces of two bodies at rest Kinetic friction – the force that opposes sliding motion
  5. 5. Key terms Rolling friction – the force that opposes rolling motion Normal force (Fn) – the force pressing two contact surfaces together
  6. 6. Key terms Air resistance – the friction between air and a body moving through it Terminal velocity – the velocity acquired by a freely falling body when its weight equals the upward force exerted by air
  7. 7. Cause
  8. 8. Types
  9. 9. Types
  10. 10. Types
  11. 11. Types
  12. 12. Properties
  13. 13. Properties
  14. 14. Properties
  15. 15. Properties
  16. 16. Properties
  17. 17. Properties
  18. 18. Air resistance
  19. 19. Terminal velocity
  20. 20. Terminal velocity
  21. 21. Advantages
  22. 22. Advantages
  23. 23. Advantages
  24. 24. Advantages
  25. 25. Disadvantages
  26. 26. Disadvantages
  27. 27. Disadvantages

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