Question

A girl walks 2 km north, then 2 km east, then 2km south, then 2km west. what distance does she travel? what is her displacement?

Answer 1

Her distance is 2+2+2+2=8 km

However, her displacement is 0 km because she ended up in the same place

Answer 2

She travel 8 km. Her displacement is the point from where she started travelling.