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Velocity over time / 2 questions

  1. Jul 5, 2009 #1
    1. The problem statement, all variables and given/known data
    1. Lillian rides her bicycle along a straight road at an average velocity (v).
    (1)Write an equation showing how far she travels in time (t).
    (2) If Lillian’s average speed is 7.5m/s for a time of 5.0min, show that she travels a distance of 2300m.

    2. Relevant equations
    Unknown

    3. The attempt at a solution
    I've read quite a bit in the notes that I've taken and can't find the relevant equation needed to solve both questions. I'm not looking for the "answer" so much. But the equations needed to solve would be amazing. I'll do the work myself.
     
  2. jcsd
  3. Jul 5, 2009 #2

    negitron

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    What does 1 m/s mean, mathematically?
     
  4. Jul 5, 2009 #3
    1.0 meters per second?
     
  5. Jul 5, 2009 #4

    negitron

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    Does that not suggest an equation which relates distance, time and speed?
     
  6. Jul 5, 2009 #5
    speed = meters/time .. so just speed = distance/time.
     
  7. Jul 5, 2009 #6

    negitron

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    Correct. Now, you can solve problem #1, at the very least.
     
  8. Jul 5, 2009 #7
    I suppose I'm confused about the difference between speed/velocity. Time to read. Thanks a lot for the help!
     
  9. Jul 5, 2009 #8

    negitron

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    In this case, speed and velocity are interchangeable. More formally, velocity is a vector quantity which includes speed AND direction but for the purposes of this exercise, you needn't worry about that distinction.
     
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