Vector Problems: Ans to A+B & A-B | Magnitude & Dir. vs West

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The discussion focuses on solving vector problems involving vector A, which has a magnitude of 70 units pointing due west, and vector B, also with a magnitude of 70 units pointing due south. The correct calculations for the resultant vectors A + B and A - B yield a magnitude of 99 units at an angle of 45 degrees south of west for A + B, and the same magnitude at an angle of 45 degrees north of west for A - B. The user was initially confused about the angles and was advised to specify the angles correctly relative to due west.

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tjnguyen
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Hi i need help with some online homework but i can't seem to get the right answer.
Vector A has a magnitude of 70 units and points due west, while vector B has the same magnitude and points due south. Find the magnitude and direction of (a) A + B and (b) A - B . Specify the directions relative to due west.

for part a) i got mag = 99 with angle of 45 degreees south of west and b) same thing but north of west am i doing something wrong?
 
Last edited:
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Are you getting both a) and b) wrong, or just b)? You are likely not specifying the angle properly from the due west direction.
 

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