Question

An object moves from point A to point B to point C, then back to point B and then to point C along the line shown in the figure. Find the magnitude of displacement covered by the moving object in $\text{km}$.

• A. $13$
• B. $11$
• C. $9$
• D. $7$

Answer 1

The correct option is C $9$

$\text{Displacement}=\text{Final position}-\text{Initial position}$
$\Rightarrow \text{Displacement}=\text{Position of point C}–\text{Position of point A}$
$=9-0=9\text{km}$