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6 Written questions

5 Multiple choice questions

  1. motion
  2. friction acting on a stationary object keeping it from moving
  3. friction that acts on an object sliding across a surface
  4. 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
  5. 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

5 True/False questions

  1. 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


  2. Mass and Accelerationdirect
    one increases the other increases


  3. Normal force calculateddirect
    one increases the other increases


  4. Equilibriumno net force
    no acceleration


  5. Factors influencing kinetic frictionvelocity
    surface area


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