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Average Velocity and resultant velocity

  1. Feb 9, 2014 #1
    A hiker begins a trip by first walking 25.0 km south east from her base camp in 8 hours. On the second day, she walks 40.0 km 60.0° north of east in 12 hours, at which point she discovers a forest ranger's tower.

    Determine the average velocity of the hiker
    Determine the resultant velocity of the hiker

    I am confused wit the differences between resultant velocity and average velocity

    Thank you
     
  2. jcsd
  3. Feb 9, 2014 #2
    We speak of the resultant velocity when we have two (or more) motions happening simultaneously, when we know the velocity of one motion with respect to O (whatever this is), and the velocity of the second motion with respect to the first motion; then we can find out the velocity of the second motion with respect to O as its resultant velocity.

    In your problem, however, I do not see any simultaneous motions.
     
  4. Feb 9, 2014 #3

    PhanthomJay

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    resultant velocity here apparently is the vector sum of the velocity vectors, although not simultaneously applied. Average velocity is total displacement over total time.
     
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