A runner starts at the mark on a straight track and finishes at the mark

PHYSICS · Single correct · CBSE · Physics · Motion · Motion

Problem

A runner starts at the

40\,\text{m}

mark on a straight track and finishes at the

10\,\text{m}

mark. The positive

x

-axis points toward the east. Which of the following best describes the runner’s displacement? (a)

\phantom{-}30\,\text{m}

, toward the east (b)

-30\,\text{m}

, toward the east (c)

-30\,\text{m}

, toward the west (d)

\phantom{-}30\,\text{m}

, toward the west