Question
Part B & C
121 <HW2-Ch3 Item 1 You are given a vector in the xy plane that has a magnitude of 80.0 units and a y component of -69.0 unit
Assuming the component is known to be positive, specify the magnitude of the vector which, if you add it to the original one
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Answer #1

b)

Ā= 11 i -69

(2+(-69)2 = 80

21 = 40.485

A = 40.485 i - 69

B = 12 i +69

A+B= (40.485 +22) i

80 = -(40.485 +.02)

C2 = -120.485

B = -120.485 i + 69 9

B = (-120.485)2 +692 = 138.844

Magnitude of B vector is 138.844

C)

O = 180º – tan-1 150.1° - 120

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