Determine the combined force magnitude

[sdjackson79]

a force represented by the vector a=2i+-5j and the other exerts a force b=-8i-3j determine the combined force magnitude

 

[inha]

do you know what vectors are and how they are added? do you know basic Newtonian mechanics?

try drawing a picture, it should clarify things.

 

[sdjackson79]

I am having trouble with it I keep getting - 14

 

[inha]

what exactly are you doing? the answer is most definately positive.

 

[sdjackson79]

sorry I scrwed up (2i+5j)+(-8i-3j) I add the horizontal components then add the vertical components then simplify. I came up with 10 does this look right

 

[inha]

which is the correct form of the vectors? in your first post it was 2i-5j and -8i-3j. that way the magnitude of the sum force is 10.

 

[sdjackson79]

Sorry the first posting was the correct one 10 is the answer feeling kinda stupid thank you for the help