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6 Written Questions

5 Multiple Choice Questions

  1. no net force
    no acceleration
  2. roughness or smothness of surfaces
    if both surfaces are rough then it will be high
    if both surfaces are smooth then it will be low
  3. the velocity of a falling object when it has enough air resistance to cancel out its weight
    an object at terminal velocity is in dynamic equilibrium
  4. velocity
    shape
    surface area
  5. direct
    one increases the other increases

5 True/False Questions

  1. Factors influencing kinetic frictioncoefficient of friction
    normal force

          

  2. Net ForceThe net force on an object is equal to the product of the mass of the object and its acceleration
    More EF=more acceleration
    if mass was increased acceleration would decrease

          

  3. Friction and air resistance act againstmotion

          

  4. Fluid Frictionfriction acting on a stationary object keeping it from moving

          

  5. if a problem has an object moving at a constant velocity thenacceleration and EF are 0

          

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