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The actual meaning of delta in these circumstances

  1. Dec 7, 2007 #1
    1. The problem statement, all variables and given/known data
    Please don't make fun of my question, I just want to have a strong understanding of the meaning and it's use

    My textbook just pops these symbols out at me without explanation. Maybe it just expects I know this stuff
    Code (Text):

    In the equation Vs = [tex]\Delta[/tex] d / [tex]\Delta[/tex] t

  2. jcsd
  3. Dec 7, 2007 #2

    Shooting Star

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    Delta denotes the difference in the value of a quantity. Suppose you are moving along a st line and you are at a dist d1 from a fixed point O (on the st line) at time t1. Afterward, at time t2, you are at a dist d2 from the same point O. Then we say delta d = d2-d1 and delta t = t2-t1.

    Notice that the average speed in moving from first pt to the second is (d2-d1)/(t2-t1) = delta d/ delta t.
  4. Dec 7, 2007 #3
    Thank you shootingstar
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