Question

8/20
if a person walks 20 meters to the east, and walks back 5 meters to the west. what is the displacement of the walker?
25 meters
15 meters
5 meters
4 meters

Explanation:

Step1: Define displacement

Displacement is the shortest distance from the initial to the final position.

Step2: Analyze directions

Let East be positive ($+20$ m) and West be negative ($-5$ m).

Step3: Calculate displacement

Displacement $=20 - 5=15$ m (East)

Answer:

15 meters