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Physics 211 help please! Where do i even start?

  1. Feb 29, 2012 #1
    To meet a U.S. Postal Service requirement, employees' footwear must have a coefficient of static friction of 0.5 or more on a specified tile surface. A typical athletic shoe has a coefficient of 0.750. In an emergency, what is the minimum time interval in which a person starting from rest can move 3.45 m on a tile surface if she is wearing the following footwear?
    (a) footwear meeting the Postal Service minimum


    (b) a typical athletic shoe
     
  2. jcsd
  3. Feb 29, 2012 #2

    tiny-tim

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    Welcome to PF!

    Hi Megatron20! Welcome to PF! :wink:

    Show us what you've tried, and where you're stuck, and then we'll know how to help! :smile:
     
  4. Feb 29, 2012 #3
    The problem is that i have no idea where to even start tiny tim!
     
  5. Feb 29, 2012 #4

    tiny-tim

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