DaTario's latest activity
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I did not say that. Eventually this story is about definitions -
DaTario replied to the thread B Average velocity as a weighted mean.Hi, wrobel. But why is it not appropriate or correct to calculate the average velocity in this context from an integration in x (spatial...
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DaTario replied to the thread B Average velocity as a weighted mean.I guess I got it (with the help of yours). We can say that the expression $$ \frac{v_2}{v_1 + v_2} $$ is the fraction of the total time...
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The proportional of the total time that ##v_1## applies is ##\frac{v_2}{v_1+v_2}##. This is a relative weighing of ##v_2##. And vice versa.
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DaTario replied to the thread B Average velocity as a weighted mean.Given a set of numbers, the harmonic mean is the inverse of the artithmetic mean of the inverses of these numbers, namely, $$ \bar v =...
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DaTario reacted to anuttarasammyak's post in the thread B Average velocity as a weighted mean with
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$$\bar{v}=\frac{2L}{L/v_1+L/v_2}=\frac{2v_1v_2}{v_1+v_2}$$ I am not sure what are harmonic mean and weighted average you say in this result. -
Hello everyone, Consider the problem in which a car is told to travel at 30 km/h for L kilometers and then at 60 km/h for another L...