Physics

Problem

A buoy in the ocean completes

15

full up-and-down oscillations in

45\,\text{s}

. At the same moment, a swimmer located

60\,\text{m}

directly along the line of wave travel from the buoy observes that exactly

5

complete wavelengths span the distance between them. What is the speed of the ocean waves? a)

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

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

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

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