As a train of water waves goes by, a piece of cork floating on the water bobs up and down one complete cycle each second. The waves are 2 meters long. What is the speed of the wave? A. vw = 0.25 m/s B. vw = 0.50 m/s C. vw = 1.0 m/s D. vw = 2 m/s E. vw = 4 m/s