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Vectors delta velocity calculations

  1. Apr 26, 2013 #1
    Hello,

    Two waves originated from point A and point B, waves are 'velocity-direction-dependent', can be treated as 'vectors', it took t2 time for the wave from point B to reach A, and it took time t2 for the wave from point B to reach A.

    Given the fact the two vectors have the same 'magnitude', and only the t1 and t2 are known is there a way to calculate delta velocity?



    A>>>>>>>>>>> B, in t1 time
    B>>>>>>>>>>> A, in t2 time

    Distance between A and B is constant, and only known variables are t1 and t2, is there a way to calculate Δv?


    thank you!
     
  2. jcsd
  3. Apr 27, 2013 #2

    Stephen Tashi

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    Is it a known constant value? - or it is an unknown value, just known to be some constant?
     
  4. Apr 27, 2013 #3

    HallsofIvy

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    If the distance from B to A is d, then the first wave, taking t1 to go from B to A, has speed d/t1. The second wave, taking t2 to go from B to A, has speed d/t2. The "[itex]\Delta v[/itex]" is d/t1- d/t2= d(t2- t1)/t1t2.
    If you do not know the distance from B to A, then you cannot calculate [itex]\Delta v[/itex].
     
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