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Re: reason for "s = distance travelled"




"Inge H. A. Pettersen" writes:
: "What is the reason for using >the letter s to denote distance
travelled ?".

The letter "d" is usually used for distance. For example , "A boy walks
100 meters north and then 100 meters south. What is the total distance
that he walked?"

The letter "s" is usually used for displacement. Regardless of the
distance
that the boy walked, if he ends up at the same spot he started from, his
displacement is zero.

Herb Gottlieb from New York City
(Where we have many displaced persons from all over the world living
here)