Basic Biomechanics 6th Edition by Susan Hall

Exercise 4

A buoy marking the turn in the ocean swim leg of a triathlon becomes unanchored. If the current carries the buoy southward at 0.5 m/s, and the wind blows the buoy westward at 0.7 m/s, what is the resultant displacement of the buoy at the end of 5 minutes (258 m, = 54.5 ° west of due south)