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Air Resistance Constant

  1. Feb 25, 2005 #1
    Hey im just wondering about something, air Resistance is proportional to the velocity in some cases or velocity squared in others.

    dV/dt=kv what is a typical constant for k, i know it varies so lets just say a baseball at sea level(im sure you all can guess why im asking this.... :smile: ) Also is there a way to calculate this "k"...
    any help greatly appreciated thanks!
  2. jcsd
  3. Feb 26, 2005 #2
    It depends very much on the shape and texture of objects, if you use the formula [tex]D = \frac{1}{2}CA\rho v^2[/tex]. For a spherical body like the baseball it should be around 0.5.
    Have a look here also: http://www.ac.wwu.edu/~vawter/PhysicsNet/Topics/Dynamics/Forces/DragCoeficientValues.html [Broken] for a table of constants.
    Last edited by a moderator: May 1, 2017
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