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6 Written questions

5 Multiple choice questions

  1. friction acting on a stationary object keeping it from moving
  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. no net force
    no acceleration
  4. acceleration and EF are 0
  5. the sum of all forces acting on an object
    a net force will cause ACCELERATION

5 True/False questions

  1. Normal force calculateddirect
    one increases the other increases


  2. Terminal Velocitythe 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


  3. Newton's 2nd law of motiona net force on an object produces an acceleration on that object that is directly proportional to the net force and inversely proportional to its mass


  4. Factors influencing kinetic frictioncoefficient of friction
    normal force


  5. EF=maThe 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


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