Traditionally in calculations involving time, distance, velocity and acceleration, the variable used for distance is named s. For example, s = ut + ½at² and v² = u² + 2as. What is the origin of this?
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it comes from the Latin "spatium" which means distance between two points.
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The reason s is used and not d is because s is a value for position, not distance.
Remember, in order to get disance you have to find the difference between s1 and s2.
Remember, in order to get disance you have to find the difference between s1 and s2.
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You can't use d because it would get confusing in differentiation. In French it's the same word and in German, Dutch and Scandinavian languages it starts with A, so we had to opt for Latin.
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Could be S for speed, means the same as velocity.