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Physics q - need help

  1. Sep 21, 2005 #1
    physics PLEASE HELP :(

    please help me i really dont know how to do this question for physics :confused: :confused: :confused: :eek:

    A cyclist travels to work at an average speed of 3 metres/sec and returns at an average speed of 9 metres/sec what is the average speed of the entire journey??

    the answer is not 6 and it is not as simple as speed= distance/time please help :frown:
    Last edited: Sep 21, 2005
  2. jcsd
  3. Sep 21, 2005 #2

    Doc Al

    User Avatar

    Staff: Mentor

    The average speed is found by dividing the total distance by the total time of travel. (Since you aren't given the distance, just make one up.)
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