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Homework Help: Homework Problem: Kinematics

  1. Feb 2, 2005 #1
    As the earth rotates through one revolution, a person standing on the equator traces out a circular path whose radius is equal to the radius of the earth (6.38*10^6). What is the average speed of this person in meters per second and miles per hour?

    I am really having trouble figuring out what to do for this problem. I know that distance =2*pi*radius. That equals 4.009*10^7. I don't know what else to do
     
  2. jcsd
  3. Feb 2, 2005 #2

    Doc Al

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    Staff: Mentor

    Don't forget units: in this case, meters. (And you'll need to convert to miles.)

    What the definition of average speed? speed = distance/time. Figure out the time: One day equals how many hours? seconds?
     
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