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Homework Help: Can't figure this one out

  1. Feb 12, 2008 #1
    can't figure this one out!!

    does any body know why a motorcycle is more aerodynamically affected than a truck??
    really thought hard about it but just can't figure it out!
    is it because of the two tyres??

  2. jcsd
  3. Feb 12, 2008 #2
    Air resistance depends on the cross section. Rolling resistance depends on mass
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