Question

The displacement of car in moving from $O$ to $P$ and its displacement in moving from $P$ to $Q$ are
Answer the following question based on given figure.

• A. $+360m$ and $-120m$
• B. $-120m$ and $+360m$
• C. $+360m$ and $+120m$
• D. $+360m$ and $-600m$

Answer 1

Answer: (A)

Displacement $=\Delta x=x_2-x_1$
For journey, displacement of car moving from $O$ to $P$
$x_2=+360m$
$x_1=0m$
$\Rightarrow \Delta x=x_2-x_1=360-0=+360m$
For journey, displacement in moving from $P$ to $Q$
$x_2=+240m$
$x_1=+360m$
$\Rightarrow \Delta x=x_2-x_1=240-360=-120m$
Here, $-$ ve sign implies that the displacement is in -ve direction i.e., towards left.