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Air Resistance (Drag Force) and Terminal Velocity

  1. Nov 28, 2013 #1
    1. The problem statement, all variables and given/known data

    "How does air resistance affect terminal velocity"


    2. Relevant equations

    N/A

    3. The attempt at a solution

    I know most of the answer of this, however I am just wondering say take a parachutist for example, if the air resistance is the resultant force, then in order to reach terminal velocity the parachutist would have to decelerate until the air resistance=weight and hence terminal velocity is achieved, is this correct?
     
  2. jcsd
  3. Nov 28, 2013 #2

    rude man

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    Yes.
     
  4. Nov 28, 2013 #3
    Almost right, the air resistance isn't the resultant force. The resultant force is the air resistance + the weight. When the air resistance is equal to the weight, the resultant force is zero and so there is no acceleration.
     
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