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Homework Help: Air resistance force

  1. Sep 24, 2006 #1
    A 1.21 g samara--the winged fruit of a maple tree--falls toward the ground with a constant speed of 1.1 m/s What is the force of air resistance exerted on the samara?
    I know that F=ma
    I also know I have to account for 9.81 N for g. So by upward force am I looking for W? That would be 11.9N.
     
  2. jcsd
  3. Sep 24, 2006 #2
    correction ...

    1.21 g = 0.00121 kg

    force of air resistance = mg = (.00121 kg)(9.81 m/s^2) = .0119 N
     
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