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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