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Homework Help: Vertical air resistance

  1. Mar 7, 2012 #1
    If I know the theoretical acc down is 9.8 and I have the actual acceleration to be 9.2, do I use 9.8-9.2 to find the air resistance force? Or do I use 9.2-9.8?

    And then after that, do I multiply it by the mass? Or do I calculate both forces and then subtract them?
     
  2. jcsd
  3. Mar 7, 2012 #2

    gneill

    User Avatar

    Staff: Mentor

    As usual, draw a Free Body Diagram showing the forces acting...
     
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