Waves on a Lake Pass Under a Floating Bird Causing

Multiple Choice

Waves on a lake pass under a floating bird causing the bird to bob up and down with a period of 2.5 seconds. If the distance from wave trough to wave trough is 3.0 meters, what is the speed of the wave?

A) 1.5 m/s
B) 2.1 m/s
C) 1.2 m/s
D) 1.9 m/s
E) 0.21 m/s