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What are unit vectors useful for?

April 26, 2017centrifugal force frames of referfence inertial forces newtonian mechanics useful vectors

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What are unit vectors useful for?

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Vectors combine two properties–direction and magnitude. Sometimes it is convenient so look at each of these separately. A vector V in the x-direction can be written V xu: the factor V contains all the information about the magnitude, while the unit vector tells everything about the direction.