Wally,

That "VECTOR" would be called "DRIFT"

Drift would include leeway, tide, deviation and variation, windage,
helmsmans error, etc. Drawn from the starting point to present position

Ole Thom

HAPPY 4th

"Thom Stewart" wrote:
......wouldld include leeway, tide, deviation and variation, windage,
helmsmans error, etc.

That's pretty close, but you are missing one thing:
Unless you crossed the equator exactly after the first 7 hours which
is statistically very unlikely there vould also be a geometrical
component due to the fact that you are sailing on a globe
and not on a pancake.

Velocity over the ground (?) ("beholden fart" in my native language)
in a unit of nautical miles
per 56 hours, would be the closest I can think of, but it doeen't make
much sense.


Peter S/Y Anicula

Should have been "unless you cross the equator exactly after the first
21 hours" instead of 7.
I thought you went North first. My teacher apparently forgot to tell
me to read the question thoroughly before answering.

Maybe I should comment a bit further on the "geometrical component".
It could be defined as a trigonometrically function of your
start-latitude and your speed over the ground.
Hint: A "parallel", the circle that consists of al points at a given
latitude (for instance 56 degrees North), is smaller (has a lesser
circumference) than any parallel closer to the poles and larger than
any parallel closer to equator, but they are all crossed by the same
number of longitudinal.

Peter S/Y Anicula

"Peter S/Y Anicula" skrev i en
meddelelse ...
"Thom Stewart" wrote:
......wouldld include leeway, tide, deviation and variation,
windage,
helmsmans error, etc.

That's pretty close, but you are missing one thing:
Unless you crossed the equator exactly after the first 7 hours which
is statistically very unlikely there vould also be a geometrical
component due to the fact that you are sailing on a globe
and not on a pancake.

Velocity over the ground (?) ("beholden fart" in my native
language)
in a unit of nautical miles
per 56 hours, would be the closest I can think of, but it doeen't
make
much sense.


Peter S/Y Anicula

Yet another correction:
It is of course the parallels closer to equator that are the larger
ones, and the ones closer to the poles that are smaller. But you
already knew that I meant the opposite of what I wrote, didn't you?

Hint: A "parallel", the circle that consists of al points at a given
latitude (for instance 56 degrees North), is smaller (has a lesser
circumference) than any parallel closer to the poles and larger
than
any parallel closer to equator, but they are all crossed by the same
number of longitudinal.

Peter S/Y Anicula

P.S. Am I talking to myself here ?

"Peter S/Y Anicula" skrev i en
meddelelse ...
Should have been "unless you cross the equator exactly after the
first
21 hours" instead of 7.
I thought you went North first. My teacher apparently forgot to tell
me to read the question thoroughly before answering.

Maybe I should comment a bit further on the "geometrical component".
It could be defined as a trigonometrically function of your
start-latitude and your speed over the ground.
Hint: A "parallel", the circle that consists of al points at a given
latitude (for instance 56 degrees North), is smaller (has a lesser
circumference) than any parallel closer to the poles and larger
than
any parallel closer to equator, but they are all crossed by the same
number of longitudinal.

Peter S/Y Anicula

"Peter S/Y Anicula" skrev i en
meddelelse ...
"Thom Stewart" wrote:
......wouldld include leeway, tide, deviation and variation,
windage,
helmsmans error, etc.

That's pretty close, but you are missing one thing:
Unless you crossed the equator exactly after the first 7 hours
which
is statistically very unlikely there vould also be a geometrical
component due to the fact that you are sailing on a globe
and not on a pancake.

Velocity over the ground (?) ("beholden fart" in my native
language)
in a unit of nautical miles
per 56 hours, would be the closest I can think of, but it doeen't
make
much sense.


Peter S/Y Anicula

Peter;

I have to give you the same advice I gave to the Jax. Re-read the
question. There aren't any distances given. The distance is a creation
of your own mind. Only time and directions were stated. The start and
the finish, in the problem, were different. The question, IN THE
PROBLEM. was what the line drawn (vector) between these two locations
(start & finish) was called. An Analytical Geometry Solution to a
navigational readings.

There are no distances asked for. There are no directions asked for.

The question; Name the line indicating the difference!!

Is that such a great PROBLEM? Can all the great minds, that have elected
to discuss this problem, admit they are looking for something other than
what was asked for! Don't be misled by Jax's ramblings ( He's caught in
the Gulf Stream again )

Ole Thom

I sent the folowing message more than 3 hours ago but it doesn't show
on Google News so I try once more. Sorry if it is a double.:

Should have been "unless you cross the equator exactly after the first
21 hours" instead of 7 - I thought you went North first. My teacher
apparently forgot to tell me to read the question thoroughly before
answering.

Maybe I should comment a bit further on the "geometrical component".
It could be defined as a trigonometrically function of your
start-latitude and your speed over the ground.
Hint: A "parallel", the circle that consists of al points at a given
latitude (for instance 56 degrees North), is larger (has a larger
circumference) than any parallel closer to the poles and smaller than
any parallel closer to equator, but they are all crossed by the same
number of longitudinal.

Peter S/Y Anicula

"Peter S/Y Anicula" skrev i en
meddelelse ...
"Thom Stewart" wrote:
......wouldld include leeway, tide, deviation and variation,
windage,
helmsmans error, etc.

That's pretty close, but you are missing one thing:
Unless you crossed the equator exactly after the first 7 hours which
is statistically very unlikely there vould also be a geometrical
component due to the fact that you are sailing on a globe
and not on a pancake.

Velocity over the ground (?) ("beholden fart" in my native
language)
in a unit of nautical miles
per 56 hours, would be the closest I can think of, but it doeen't
make
much sense.


Peter S/Y Anicula