Question

how is the position of a particle moving along a straight line described by a number? how is the direction of a motion specified by the number describing position​

Answer 1

Explanation:

The position of a particle which is moving along a staright line described by a point known as Origin which value is 0 and if the particle moving on the left side of Origin then its direction will negative and if it is moving on the right side of Origin then its direction will positive.