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April 18, 2014

April 18, 2014

Posted by **Brandon** on Friday, February 17, 2012 at 9:29pm.

3km north

13km west

0km

2km south

I think 13km west

- science -
**yoyoma**, Saturday, February 18, 2012 at 2:01amHello, you can not add vectors by just looking at the numbers. Vectors have magnitude and direction. So, you can only add North and South together, and you can also add East and West vectors together.

So, think about vectors on an x-y plane. X is positive in Quadrants 1 and 4, while it is negative in Q 2 and 3. Y is positive in Q 1 and 2 and negative in Q 3 and 4.

So, 3 km East= +3 km and 3 km West= -3 km

So, +3 -3= 0

So, the West and East vector is crossed out. The vector is in either north or south direction.

5 km North= + 5 km

2 km South= -2 km

+ 5 -2 = +3 Km

y is positive in the upper two quadrants, so your direction will be north.

3 Km North

Hope this helps!

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