For a transverse wave on a string described by y(x, t) = (0.0050 m) cos [(4.0p rad/s)t

Question:

For a transverse wave on a string described by
y(x, t) = (0.0050 m) cos [(4.0p rad/s)t − (1.0p rad/m)x]
Find the maximum speed and the maximum acceleration of a point on the string. Plot graphs for one cycle of displacement y versus t, velocity vy versus t, and acceleration ay versus t at the point x = 0.