btw - I've used my saved sailing gps tracks in the classroom - the physics
teacher projected them onto the board and had the students work out vectors
and so forth.
Scout

"Bart Senior" wrote in message
. ..
You sail directly East for 14 hours,
then South for 14 hours,
and then West for 14 hours,
and then North again for 14 hours.

Now if you draw a vector between your starting
position and your final position. What would you
call that vector?