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Vector magnitude

Classical Mechanics Level 1

Find the unit vector in the direction of \(5 i +j - 2 k.\)

\[5 i + j - 2 k\] \[\frac{5}{30}i+\frac{1}{30}j-\frac{2}{30} k\] \[\frac{5}{\sqrt{30}}i+\frac{1}{\sqrt{30}}j-\frac{2}{\sqrt{30}} k\] None of the above

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by Rohit Nair

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