Question

I walked 4 mile, turned to my left and walked 6 mile, then turned to my right again and walked 4 mile. Which of the choice mentions the distance from the starting point to the place where I stopped –

• A. 15 mile
• B. 10 mile
• C. 20 mile
• D. 14 mile

Answer 1

Answer: (B)

10 mile

Answer 2

$\overset{\rightarrow}{S}$ = $\overset{\rightarrow}{S_{1}}$ + $\overset{\rightarrow}{S_{2}}$ + $\overset{\rightarrow}{S_{3}}$, $\overset{\rightarrow}{S}$ = (4$\widehat{i}$ + 6$\widehat{j}$ + $4\widehat{i}$)mile

or $\overset{\rightarrow}{S}$= (8$\widehat{i}$ + $6\widehat{j}$) mile or |$\overset{\rightarrow}{S}$| = 10 mile