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Unit vector notation, why use 3 letters for a component?
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[QUOTE="hutchphd, post: 6239950, member: 635497"] The term v[SUB]x[/SUB][B]i[/B] is not redundant. It is not the same as v[SUB]x[/SUB] alone nor i alone. It describes a vector in a known direction (the x direction) of a particular size. The fact that we choose to label the variable with x is for convenience. While in that equation it may seem redundant, we may wish to write it down sometimes not next to i . For instance what if I ask for the magnitude of the vector V= V[SUB]x[/SUB][B]i[/B] + V[SUB]y[/SUB][B]j [/B] During the calculation the init vectors go away and yet the label remains. [/QUOTE]
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Unit vector notation, why use 3 letters for a component?
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