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5 Written questions

5 Matching questions

  1. Pulley
  2. Newton's Second
    Law of Motion
  3. Friction
  4. Work
  5. Velocity
  1. a A contact force that resists the movement of one surface
    past another surface (p. 414)
  2. b The speed and direction of an object's motion (p. 409)
  3. c Describes the relationship between acceleration (the rate
    at which an object's velocity changes over time), mass, and
    net force
  4. d A kind of simple machine consisting of a rope that fits
    onto a wheel and used to change the direction of a force
    (p. 426)
  5. e Energy used when a force moves an object (p. 416)

5 Multiple choice questions

  1. Machines that only have a few parts - they make it easier
    to do work
  2. A simple machine consisting of a wheel that revolves
    around a post, or axis (p. 427)
  3. Every force has an equal and opposite reaction, and they
    always occur in pairs
  4. A type of simple machine consisting of a bar that turns on
    a support called a fulcrum (p. 428)
  5. An object at rest will stay at rest until another object
    acts upon it, and an object moving in a straight line at a
    constant speed will continue to move in a straight line at a
    constant speed until a net force acts upon it (inertia)

5 True/False questions

  1. ForceEnergy used when a force moves an object (p. 416)

          

  2. ElectricityThe speed and direction of an object's motion (p. 409)

          

  3. PowerThe rate at which work is done (p. 417)

          

  4. AccelerationThe tendency of an object to resist a change in motion (p.
    420)

          

  5. MagnetismA device that changes the direction or the amount of
    effort needed to do work (p. 426)

          

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