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Calculating average speeds when distance is unknown

  1. Jan 11, 2010 #1
    I found a brilliant website with physics questions + solutions here
    http://www.solvephysics.com/problems_kinematics.shtml [Broken]
    the question I'm on they only tell you the speed travelled in fractions of the total distance but don't tell you the total distance. I looked at the solution but couldn't make much sense of where they got this from
    kinematics_problem86_clip_image008.gif
    heres the solution page
    http://www.solvephysics.com/kinematics_problem86.shtml
     
    Last edited by a moderator: May 4, 2017
  2. jcsd
  3. Jan 11, 2010 #2

    diazona

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    Homework Helper

    You know [itex]v = d/t[/itex], right? That can be rearranged to [itex]t = d/v[/itex]. Then just plug in values for that quarter of the journey.
     
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