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Homework Help: Calculating speed, when given total time it took, and the radius

  1. Jun 12, 2014 #1
    1. A bug walking on a circular flowerpot completes one lap around the plantar in 12.86s.
    If the radius is of the plantar is 11 cm, how fast was it traveling? Answer in cm/s.

    2. Relevant equations

    3. The attempt at a solution
    I tried dividing the diameter of the plantar by the speed & the speed by diameter. I tried the radius by the speed and vice-versa.

    I appreciate any help anyone can give me! Thanks. :)
  2. jcsd
  3. Jun 12, 2014 #2


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    Homework Helper

    If he's walking on a circular flowerpot and completes "one lap" then presumably he's walking around the circumference of the pot, right?

    So what is the distance that he traveled?
  4. Jun 12, 2014 #3
    Thank you so much! So he traveled 69.1150 and then I would divide that by the total time it took which was 12.86 to get his speed which was 5.3744! Thank you so much!
  5. Jun 12, 2014 #4


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    Homework Helper

    No problem.

    But be careful! What are the units of his speed? (It's a very good habit to pay attention to units.)

    Nevermind, I just realized the OP says "answer in cm/s"

    But still, it's good to notice units :)
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