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Average speed, average velocity for a road trip

  1. Oct 23, 2016 #1
    1. The problem statement, all variables and given/known data

    I'm very stuck at answering parts (c) and (d)

    2.png

    2. Relevant equations
    speed = Distance/Time

    3. The attempt at a solution
    IMG_20161023_115640.jpg
     
  2. jcsd
  3. Oct 23, 2016 #2
    I haven't worked the problem myself, but I am not sure your solutions to parts a and b are correct. Does it make sense to have average velocities higher or lower than both velocities? Perhaps this is why you're struggling on c and d.
     
  4. Oct 23, 2016 #3

    haruspex

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    In both a) and b) you got confused between the half (time or distance) and the whole.
    For d), what is the difference between speed and velocity?
     
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