Homework Help: Physics

Posted by HELP on Friday, October 12, 2012 at 1:28pm.

Vector Aarrowbold points in the negative y direction and has a magnitude of 8 units. Vector Barrowbold has the same the magnitude and points in the positive x direction. Find the direction and magnitude of the following vectors.

a) Aarrowbold + Barrowbold
magnitude
direction ° (counterclockwise from the +x axis)

(b) Aarrowbold − Barrowbold
magnitude
direction ° (counterclockwise from the +x axis)

(c) Barrowbold − Aarrowbold
magnitude
direction ° (counterclockwise from the +x axis)

I need a solution/steps to solve this. thanks!

Physics - Elena, Friday, October 12, 2012 at 2:09pm
(a)A+B= sqrt(A²+B²)
45º counterclockwise from the +x axis
(b)
A-B= sqrt(A²+B²)
135 ºcounterclockwise from the +x axis
(c)
B-A= sqrt(A²+B²)
315°(counterclockwise from the +x axis)

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