Question

A woman goes out running. She first travels 5.2km north. She then turns and travels 3.6km west. Finally, she turns again and travels 2.6km south. We are assuming a flat rectangular world.

If a bird were to start out from the origin (where the woman starts) and fly directly (in a straight line) to her final location, what distance d d would the bird cover?

Answer 1

D = 5.2i - 3.6 - 2.6i = -3.6+2.6i
D^2 = -3.6^2 + 2.6^2 = 19.72
D = 4.44 km.