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Average Motion Problem

  1. Aug 30, 2009 #1
    1.Starting from home, you bicycle 24km north in 2.5 h and then turn around and pedal straight home in 1.5h. c)What's the average velocity for the homeward leg of the trip? e)What's the average velocity for the trip?

    Equations V=x/t & avg. V=(V+V initial)(1/2)
     
    Last edited: Aug 30, 2009
  2. jcsd
  3. Aug 30, 2009 #2

    G01

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  4. Aug 30, 2009 #3
    c) 24km/1.5h=16km/h
    e)((24km/2.5)+16km/h)/2=12.8km/h
     
  5. Aug 30, 2009 #4

    G01

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    Part c is correct.

    For part e) you are incorrectly using the formula you listed. You are off by a few decimal places. Start from the definition of average velocity:

    [tex]v_{avg}=\frac{d_{total}}{t_{total}}=\frac{48km}{4h}=12km/h[/tex]
     
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