"HVAC" <MR.HVAC@gmail.com> wrote in message
This is the classic Physics 1/A trick question when they teaching you the
concept of vector units.
In two hours you went nowhere. Zero.
In practice, since for the intents that it is applied, basic physics applies
to a world with 3 dimensions of freedom for movement.
So at any "instant" the speed the first derivative of a function which maps
time elapsed since you started to displacment from where you started. You
could represent this by the length of a straight line or the sum three
vectors, one for each dimension, right?
If you want to know the length of the imaginary lines on the ground you
made, then you need to integrate that entire function, which you are going
to need GPS for. Or if you use the values in the question I'd guess it was
more of an algebra problem, and I don't even like to think about algebra I
I think the answer you are looking for is the fact that average velocity is
the displacement from origin divided by the time of the "jog". Since at the
end you were back where you started, you are dividing the time, which no
matter how long, into zero displacement and everybody knows that zero
divided by anything is still zero - actually it's not a mathematical truth,
it's just a concept to keep math people from going insane. Zero is a
concept, not a quantity.