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Homework Help: Speed and Velocity of a clock

  1. Sep 20, 2011 #1
    1. The problem statement, all variables and given/known data

    The sweep second hand of a clock has a length of 2.0 cm.

    2. Relevant equations

    a) What is the speed of the sweep second hand tip at the 6 o'clock position?
    b) What is the velocity of the sweep second hand tip at the 6 o'clock position?

    3. The attempt at a solution
    I don't really understand how to use 2.0 cm to solve the problem. Do you figure out the length it takes for the second hand to reach 6 o'clock and divided 2.0 cm by the answer?
     
  2. jcsd
  3. Sep 20, 2011 #2

    PeterO

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    Homework Helper

    In one minute, the tip of the hand will sweep out a circle of radius 2 cm. What is the circumference of that circle? What speed in m/s does this motion thus represent?
     
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