A river's current flows at 2.35 m/s [south]. If Alex can paddle their canoe at 3.14 m/s in still water and travels in a direction 13° north of west, what will their velocity be relative to an observer on shore?
a) 2.58 m/s [S 13° W]
b) 3.14 m/s [N 13° W]
c) 4.18 m/s [N 13° W]
d) 1.45 m/s [N 13° W]
