Question

A man travels 1 mile due east, then 5 miles due south, then 2 miles due east arid finally 9 miles due north. His displacement is.

• A. 3 miles
• B. 5 miles
• C. 4 miles
• D. between 5 and 9 miles

Answer 1

Answer: (B)

5 miles

Answer 2

$\bar{S} = \hat{i} + 5 (- \hat{j}) +2 \hat{i} + 9 \hat{j} = 3 \hat{i} + 4 \hat{j}$ $S = 5 \, miles$