If Two Collinear Vectors $\overrightarrow { \mathrm { A } }$

question 20

Multiple Choice

If two collinear vectors $\overrightarrow { \mathrm { A } }$ and $\vec { B }$ are added,the resultant has a magnitude equal to 4.0.If $\vec { B }$ is subtracted from $\overrightarrow { \mathrm { A } }$ ,the resultant has a magnitude equal to 8.0.What is the magnitude of $\overrightarrow { \mathrm { A } }$ ?

• A)2.0
• B)3.0
• C)4.0
• D)5.0
• E)6.0

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