Composites, known for their excellent stiffness-to-weight and strength-to-weight ratios, are widely used in engineering. Among these, sandwich structures are renowned for their lightness, specific strength and stiffness, energy absorption, and resistance to various loads. These structures, subjected to diverse loads during service, including low-velocity impacts, prompt researchers to investigate their behavior under such conditions. In-house finite element codes have been developed within the MATLAB environment, incorporating the first-order shear deformation theory to consider transverse shear energy. The material is assumed to be an elastic with infinitesimal strains. A suitable indentation law during the loading and unloading state is taken from the literature. The plate is meshed with 9-noded quadrilateral elements, with the impactor being a spherical rigid body. The dynamic behavior of impact on laminates and sandwich plates is analyzed using Newmark time integration with constant acceleration. The results of contact force agree when compared to available literature. In ABAQUS, the effective material properties of corrugated core (CC) of sandwich plate are determined by applying periodic boundary conditions to its representative volume element (RVE). With the utilization of these homogenized effective material properties of CC, the impact study has been conducted on sandwich plate with face-sheets as laminates.