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    chez65 Posts: 1, Reputation: 1
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    #1

    Sep 19, 2010, 11:00 AM
    Average speed
    If you travel to work at an average speed of 3 m/s and return home at an average speed of 9 m/s what is the average speed for the whole journey...
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    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 20, 2010, 06:09 AM

    Let the distance to work be d. The time to go to work becomes:



    The time to come from work is given by:



    Average speed is given by the total distance divided by the total time.
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