Question

Vector A (with arrow above) has a magnitude of 33 units and points in the positive y-direction. When vector B (with arrow above) is added to A (with arrow above) , the resultant vector A (with arrow above) + B (with arrow above) points in the negative y-direction with a magnitude of 17 units. Find the magnitude of B (with arrow above)?

Answer 1

Does it specify anything about x-coordinates/ anything about going in the x-direction?

Answer 2

thats exactly what it says

Answer 3

If not then B is simply 33+17 = -50 units

Answer 4

*note I have -50 because we need the resulting vector to point downwards

Answer 5

lets see if it works

Answer 6

it says its wrong

Answer 7

As far as I can tell that's what the problem is looking for, but I can't see how to solve for B, not without knowing anything about angles or points.

Answer 8

so is it positive probably? lol

Answer 9

thats y im on here =) lol

Answer 10

"points in the positive y-direction" is a vague description...

Answer 11

ill try 50

Answer 12

yep lol it was 50

Answer 13

Excellent!

Answer 14

thanks!

Answer 15

Aw, yes. I see it now. Magnitude is always positive.

Answer 16

lol tru