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Average velocity while walking

  1. Sep 7, 2009 #1
    1. The problem statement, all variables and given/known data

    Compute your average velocity in the following two cases: (a) You walk 59.5 m at a speed of 2.16 m/s and then run 59.5 m at a speed of 4.01 m/s along a straight track. (b) You walk for 1.00 min at a speed of 2.16 m/s and then run for 1.91 min at 4.01 m/s along a straight track.

    2. Relevant equations

    i have vavg = delta x/ delta t

    but there is no time.. in the first part of the problem..

    3. The attempt at a solution

    i'm too confused :(
     
  2. jcsd
  3. Sep 7, 2009 #2
    Average speed = total distance/total time

    total time = time of first leg of journey + time of second leg of journey

    time of first leg of journey = distance of first leg/speed of first leg

    time of second leg = distance of second leg/speed of second leg

    Got it?
     
  4. Sep 7, 2009 #3

    kuruman

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    Yes there is no time given. Can you find the appropriate times? How many seconds does it take you to travel 59.5 m if for every second that goes by you move 2.16 meters? Same approach for the second leg of the trip in question (a).
     
  5. Sep 7, 2009 #4
    i definitely do get it now, thank you!

    if only my teacher would actually teach :)
     
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