Physics

Problem

A hiker walks

300\,\text{m}

due east at a constant speed of

1.5\,\text{m}\,\text{s}^{-1}

and immediately walks

400\,\text{m}

due north at

2.0\,\text{m}\,\text{s}^{-1}

. a. (i) Determine the average speed for the entire walk. b. (ii) Determine the magnitude of the average velocity for the entire walk.