Finding the y-component from Vectorys

[Jordash]

Homework Statement

Suppose http://psdesignzone.com/PhysicsImages/formula1.gif and [URL]http://psdesignzone.com/PhysicsImages/formula2.gif[/URL] and http://psdesignzone.com/PhysicsImages/formula3.gif. What is the y-component of the sum http://psdesignzone.com/PhysicsImages/formula4.gif?

Homework Equations

http://psdesignzone.com/PhysicsImages/formula1.gif [URL]http://psdesignzone.com/PhysicsImages/formula2.gif[/URL] http://psdesignzone.com/PhysicsImages/formula3.gif http://psdesignzone.com/PhysicsImages/formula4.gif

The Attempt at a Solution

I'm sorry I really don't know what this means :( can anyone help?

 

[NoMoreExams]

Just add up the coefficients.

 

[Jordash]

so you're saying 3+3+7-1-2? = 10

Why is it that?

Thanks for the help

 

[NoMoreExams]

Is there anything in your book regarding vector addition?

 

[NoMoreExams]

so you're saying 3+3+7-1-2? = 10

Why is it that?

Thanks for the help

And no you can't mix coefficients. Do you understand what vector notation is? Like for example what does

$$R = R_x \cdot \vec{i} + R_y \cdot \vec{j}$$

mean to you?

 

[Jordash]

Yes I'm reading it it talks about getting Vector R is the vector drawn from the tail of the first vector to the tip of the last vector.

 

[NoMoreExams]

These might be of help http://www.google.com/search?hl=en&q=adding+vectors&btnG=Google+Search&aq=f&oq=

 

[Jordash]

Ok, thank you for the help