Sorry. If you have no idea what all of those parameters are, then there is nothing you can plot. A plot requires NUMBERS. You have no numbers.
Yes. You know that it will be essentially a sine wave. But the amplitude of that sine wave is unknown. The period of the sine wave is unknown. So exactly what would you hope to plot? The only thing you do know is the sine wave will pass through the point (0,0). Well, it will unless w or v0 are 0. In those cases, the curve will be everywhere undefined.
Beyond that there is nothing you can hope to plot. And this question has effectively nothing to do with MATLAB or your experience with it, as unless you know those three parameters, then it is meaningless to try to plot anything. (A tiny caveat there, if you know the RATIO of w/v0, AND the ratio of u0/w, both a specific values, then you can plort a curve.)
