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Vectors

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Abstract

If a point moves from P to Q by any path, then the length of the straight line PQ gives the magnitude of the displacement. (This in general will be different from the distance covered in moving from P to Q). This magnitude together with the direction of the straight line from P to Q specifies the vector displacement. It may be written \(\overrightarrow {PQ} \) and read as ‘the vector displacement PQ’. \(\overrightarrow {QP} \) may be similarly defined and can be seen to have the same magnitude as, but the opposite direction to, \(\overrightarrow {PQ} \).

Fig. 8-1

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Copyright information

© H. J. Halstead and D. A. Harris 1963

Authors and Affiliations

  1. 1.Mathematics DepartmentRoyal Melbourne Institute of TechnologyAustralia

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