Question

A man goes 8 km towards East and then 6 km towards North.
How far is he from the starting point?​

Answer 1

Let the east direction to be i and north direction be j .

thus the displacement of the man S = 8i +6j

so the magnitude of |s| =

$\sqrt{ {6}^{2} + {8}^{2} } = \sqrt{100} = 10m$