I now would like to write down, in most general form the equation for the position and the velocity as a function of time for a one-dimensional motion whereby the acceleration is constant.

This paper proposes, for the first time, a simplified mechanical model in an attempt to treat the motion of a cell sliding into a two-dimensional slit.

Two dimensional image was obtained by transesophageal echocardiography. The thickness, wave time and velocity were showed during atrial septal motion by omni directional M mode echocardiography (OME).