In this paper, the acceleration motion of a vertically falling non-spherical particle in incompressible Newtonian media was investigated. The velocity and acceleration were carried out using analytical solution techniques i.e., the variational iteration method (VIM) and a Pade approximant The results were also compared with VIM and the established fourth order Runge-Kutta method in order to verify the accuracy of the proposed method. It was shown that this method can lead into more accurate results compared with VIM. (C) 2011 Elsevier B.V. All rights reserved.