Question

Two particles $A$ and $B$ are located at coordinates $(20,0)\text{m}$ and $(30,0)\text{m}$. Relative position of $A$ w.r.t. $B$ is

• A. $10\text{m}$
• B. $-10\text{m}$
• C. $20\text{m}$
• D. $-20\text{m}$

Answer 1

The correct option is B $-10\text{m}$

Position of particle A on x-axis, $x_A=20\text{m}$
Position of particle A on x-axis, $x_B=30\text{m}$
Relative distance of $A$ w.r.t. $B$, $x_{AB}=x_A-x_B=20-30=-10\text{m}$