A student walks 15 paces West then 7 paces South then 8 paces East and finally 5 paces North. What is the resultant from the start to the finish?
@johnweldon1993 @timo86m

Question

johnweldon1993 · Answer

Alright so same thing there...

|dw:1401131662246:dw|

now right now..that looks terrible but...look closely

johnweldon1993 · Answer

|dw:1401131756780:dw|

make sense there?

johnweldon1993 · Answer

and also

|dw:1401131818867:dw|

awesome781 · Answer

kinda confused ...

johnweldon1993 · Answer

Alright...so lets try and break that down

johnweldon1993 · Answer

so they start by walking 15 to the west right?

and later on...they choose to go back 7 to the east....

johnweldon1993 · Answer

Or sorry they choose to go back 8*** to the east

awesome781 · Answer

so like 15-7

johnweldon1993 · Answer

Right....because its like they are going backwards

johnweldon1993 · Answer

|dw:1401132049293:dw|

johnweldon1993 · Answer

so they only really ever went     <---      units...since they went 15...and then went back in that direction 8...so 15 - 8 = 7

awesome781 · Answer

oh i thought it would be 15-7=8

anonymous · Answer

i think this is vector addition consider 

W=-j , E=+j, S=-i, N=+i   the components

Something like that. I haven't done it in a while

awesome781 · Answer

|dw:1401136220688:dw|