A person walks 4 km west, then 2 km south, then 1 km east. What is the shortest distance from the starting point?
Q1. A person walks 4 km west, then 2 km south, then 1 km east. What is the shortest distance from the starting point?
Answer: √(3² + 2²) km
Explanation: Net displacement west is 4 - 1 = 3 km, and south is 2 km, so use Pythagoras' theorem: √(3² + 2²).