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The symbol 's' is so often used for displacement because the symbol 'd' is often chosen for distance. This is an important distinction in physic â¦ s, where differences between scalar (distance) and vector (displacement) types are used to measure and describe different things.hether s (or d) is used to indicate distance or displacement, the distinction is that a right-facing arrow is placed over the letter to indicate displacement since it is a vector quantity.
Distance. an important geometric concept whose meaning depends on the kind of entities for which it is defined. The distance between two points is the length of the line segment joining the points. The distance from a point to a line or a plane is the length of the perpendicular from this point to the line or plane. The distance between two parallel lines or planes is the length of a common perpendicular to the lines or planes.