A boy cycles 5 km north, then 3 km south, then 2 km north. What is his final displacement?
Q1. A boy cycles 5 km north, then 3 km south, then 2 km north. What is his final displacement?
Answer: 4 km
Explanation: Total northward distance = 5 + 2 = 7 km, southward = 3 km. Net displacement = 7 - 3 = 4 km north.