Q. The three initial and final position of a man on the $x -$axis are given as $(i)\ ( - 8m,\ 7m)$ (ii) $(7m,\ - 3m)$ and (iii) $( - 7m,\ 3m)$ Which pair gives the negative displacement

A) (i)
B) (ii)
C) (iii)
D) (i) and (iii)
Explanation

(b) [image:3_image177.emf]
(i) The displacement of the main from $A\ $to $E$ is $\mathrm{\Delta}x = x_{2} - x_{1} = 7m - ( - 8m) = + 15m$ directed in the positive $x$-direction
(ii) The displacement of the man from $E$ to $C$ is $\mathrm{\Delta}x = - 3m - (7m) = - 10m$ directed in the negative $x$-direction
(iii) The displacement of the man from $B$ to $D$ is $\mathrm{\Delta}x = 3m - ( - 7m) = + 10m$ directed in the positive $x$-axis

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.