so I think he's looking for the name of the
resultant vector, and not its magnitude.

vectors ALWAYS have magnitude, wally. go back to study hall.



--
Wally
www.artbywally.com
www.wally.myby.co.uk

Constant speed.

Scout wrote

do we assume the distance covered is equal in all directions, or are you
saying it doesn't matter?
Scout

"Bart Senior" wrote

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?

our physics professor used to smack our knuckles for saying speed and not
velocity. What a grump.
Scout

speed is a scalar, velocity is a vector. rather different breeds of cats.

The solution is a vector.

Remco Moedt wrote

On Sun, 04 Jul 2004 04:53:15 GMT, "Bart Senior"
wrote:

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?

A dot. :-)

Remco

You can assume they are constant.

Wally wrote in message
...
Capt. Mooron wrote:

To be accurate you would need the start and end coordinates. The
vector between the 2 if any could be calculated.... but the point is
moot. If all speeds and bearings [no leeway] were constant you would
be at your starting point.

Speeds haven't been stated, so they can't be assumed to be constant.


I believe Bart is having some fun! ;-)

The spanner in the works is idea that it's a round trip.


--
Wally
www.artbywally.com
www.wally.myby.co.uk

JAXAshby wrote:

Speeds haven't been stated, so they can't be assumed to be constant.

speeds are never constant, so assuming such can put you on the rocks.
in addition, any set, any drift will have you someplace else.
wally, go back to study hall. lunch is not for another 45 minutes.

Was it the "can't" part of "they can't be assumed to be constant" that you
failed to discern the meaning of?


--
Wally
www.artbywally.com
www.wally.myby.co.uk

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

high school teacher, right? Or maybe a community college teacher?

Bart Senior wrote:

You can assume they are constant.

Is the start point 7 miles north of the Equator?


--
Wally
www.artbywally.com
www.wally.myby.co.uk

Pat will tell you that there is no theoretical great lover...



Cheeers

Capt. Mooron wrote:

If you don't have the theory down pat.... how in the world will you pass the
practical?

CM

"Nav" wrote in message
...
| A theory exercise?
|
| :P
|
| Cheers
|
| Capt. Mooron wrote:
|
| Ah... Yes.... calculating a vector between "Legs".... one of my
favourite
| navigational pastimes. ;-)
|
| CM
|
| "Scout" wrote in message
| ...
| | sorry, I was flirting with a math teacher at the time.
| | Scout
| |
| | "Capt. Mooron" wrote in message
| | ...
| | So what did your Prof refer to the vector between your departure
| | coordinates
| | and your arrival coordinates?
| |
| | CM
| |
| | "Scout" wrote in message
| | ...
| | | 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?
| | |
| | |
| | |
| | |
| |
| |
| |
| |
|
|
|

A cat is not a vector.

Cheers

JAXAshby wrote:

our physics professor used to smack our knuckles for saying speed and not
velocity. What a grump.
Scout


speed is a scalar, velocity is a vector. rather different breeds of cats.