A person walks 15km towards the North, then 10km towards the West. What is his net displacement?
Q1. A person walks 15km towards the North, then 10km towards the West. What is his net displacement?
Answer: √(15² + 10²) km
Explanation: Use Pythagoras' theorem: √(15² + 10²) = √(225 + 100) = √325 km.