Physics

Problem

A boat sails successively along three straight paths: (i)

4\,\text{km}

due east, (ii)

6\,\text{km}

30^{\circ}

north of east, and (iii)

5\,\text{km}

due south. The magnitude of the boat’s net displacement from the starting point is closest to a)

7.0\,\text{km}

9.4\,\text{km}

9.7\,\text{km}

12.2\,\text{km}