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Unit Vector and Components of Vector

Unit Vector

A unit vector is a vector whose magnitude is one unit.

Unit Vectors
One special type of vectors are unit vectors. Unit vectors have a magnitude of one, and the specific unit vectors i and j represent the positive horizontal and vertical unit vectors in a two dimensional plane. We can write any two dimensional vector in terms of these two unit vectors, and that notation is seen often in Calculus.

Components of a Vector

The components of a vector means the parts of the vector

Unit Vector Notation
Expressing a vector as the scaled sum of unit vectors

Unit Vector Notation (part 2)
More on unit vector notation. Showing that adding the x and y components of two vectors is equivalent to adding the vectors visually using the head-to-tail method

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