Addition by Components: If vector 
has components Ax = -3.0 lb and Ay = -4.0 lb, and vector 
has components Bx = 3.0 lb and By = -8.0 lb, what is the magnitude of vector 
= 
- 
?
A. 13 lb
B. 16 lb
C. 140 lb
D. 7.2 lb
Answer: D
Physics & Space Science
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