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6. Which of these is not a contact force

  • static electricity
  • upthrust
  • air resistance
  • water resistance

7. What friction is caused when something moves through water

  • water float
  • speed
  • water resistance
  • air resistance

8. What force attracts objects made of iron

  • static electricity
  • contact force
  • magnetism
  • air resistance

9. Which of these isn't a force acting on a submarine

  • up thrust
  • forward pushing force
  • friction
  • gravity

10. Which of these forces can not effect an object

  • speed
  • umbrella
  • shape
  • direction

11. What causes something to move through the air

  • gravity
  • air resistance
  • contact force
  • friction

12. What happens when two things rub together

  • friction
  • air resistance
  • force
  • shape