A person walks 4 km north, then 2 km south, then 3 km north. What is his final position relative to the starting point?
Q1. A person walks 4 km north, then 2 km south, then 3 km north. What is his final position relative to the starting point?
Answer: 5 km north
Explanation: Net displacement is 4 - 2 + 3 = 5 km north.