Question

A man travels 4 km due East and then 3 km due North. The magnitude of his displacement is:

• A. 7 km
• B. 1 km
• C. 5 km
• D. None of these

Answer 1

Answer: (C)

The magnitude of his displacement is $=\sqrt{{(4)}^2+{(3)}^2}=\sqrt{16+9}=5km$