Interpolation of nodal velocities on a PATH

[NCR9026]

In ANSYS 9, I have a FEM of a thin membrane (in the X-Y plane) undergoing transient deflections. I've been using PATH commands to output the out-of-plane membrane displacements (i.e., UZ) on various cross-sections of the membrane.

Now I need to get the velocities and accelerations of the membrane along those same cross-sections. Is there any way to interpolate the nodal VZ and AZ commands onto a path?

Thanks.