Posted by **Anonymous** on Monday, September 13, 2010 at 9:43pm.

a man walks 10 meters in a direction of 20 degrees North of East, then 20 meters in a direction due west. What is his total displacement vector in component form

- physics -
**TutorCat**, Monday, September 13, 2010 at 9:56pm
break this problem down to horizontal (x) and vertical (y) components! it'll probably help if you drew the problem out!

horizontal:

(10cos20) meters

20 meters

add the horizontal components together

vertical:

(10sin20) meters

perform Pythagorean theorem-

total displacement: sqrt[(horizontal)^2+(vertical)^2]

remember displacement is a vector so it also has direction! to find direction: tan^-1(vertical/horizontal)

- physics (correction) -
**Anonymous**, Tuesday, September 14, 2010 at 12:27am
opps! I forgot to put a negative in front of -20 meters under the horizontal component.

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