Vector Sum and Difference: Solving with Graphical Methods | Homework Help

[wowdusk]

Homework Statement

hi i am having problems with this problem

Vector A has a magnitude of 8.00 units and makes an angle of 45.0 degrees with the positive x-axis. Vector B also has a magnitude of 8.00 units and is directed along the negative x-axis. Using graphical methods, find (a) the vector sum A+B and (b) the vector difference A-B.

Homework Equations

A+B
A-B

The Attempt at a Solution

Do i just use the graph to count?
What about the difference vector?

 

[mplayer]

Do i just use the graph to count?

Yes

What about the difference vector?

Same deal. Remember, vectors add head-to-tail.

 

[slider142]

What is the graphical method of adding two vectors? Subtracting one vector from the other is defined as simply adding the negative of the second vector to the first. Using a parallelogram made up of the vectors, you can see both of these operations.

 

[wowdusk]

thank you