1. The problem statement, all variables and given/known data A wave travels along a string in the positive x-direction at 34 m/s. The frequency of the wave is 49 Hz. At x = 0 and t = 0, the wave velocity is 2.3 m/s and the vertical displacement is y = 5 mm. Write the function y(x, t) for the wave. (Use the following as necessary: x and t. Assume x and y are in m, and that t is in s.) 2. Relevant equations sinusoidal wave: y = Asin(kx+wt+phi) 3. The attempt at a solution I'm trying to understand all of this. I really don't though. I believe the y displacement has something to do with amplitude, correct? Why is there 2 different wave velocities? If anyone could give me a nudge in the right direction, I'd really appreciate it.