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Vectors delta velocity calculations

by NMann
Tags: vectors, velocity
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NMann
#1
Apr26-13, 09:38 AM
P: 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!
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Stephen Tashi
#2
Apr27-13, 10:25 AM
Sci Advisor
P: 3,314
Quote Quote by NMann View Post

Distance between A and B is constant
Is it a known constant value? - or it is an unknown value, just known to be some constant?
HallsofIvy
#3
Apr27-13, 01:46 PM
Math
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Thanks
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P: 39,682
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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