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Homework Help: Vehicle aerodynamics

  1. Feb 12, 2008 #1
    why is a motorcycle more aerodynamically affected than a truck??, I have been lead to believe it is because of the lower density, is that true?? and how can i justify it??

    Thanks
     
  2. jcsd
  3. Feb 12, 2008 #2

    mgb_phys

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    Drag is proportional to cross sectional area.
    An unfaired motorbike make have a higher draw coefficent than a truck (ie is less streamlined) but a truck has a lot more cross sectional area so more overall drag.
     
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