A man walks a distance of 3km due east, then another 4km due south. What is the displacement relative to his starting point?

1 Answer
Jun 19, 2018

Because East and South are at right angles to each other, we can use the distance formula:

d=(3 km)2+(4 km)2

d=9 km2+16 km2

d=25 km2

d=5 km