To evaluate the motion of a curling stone on the ice, a velocity change and a curl of the stone have been experimentally analyzed. In 2012, we observed the motion of a curling stone and measured the positions and rotating angles during the motion on the ice by image processing of sequential images of the curling stone obtained by CCD cameras installed over the curling sheet. In this study, we evaluated a velocity change and a curl with acceleration vector, which is decomposed into a tangential component of the direction of velocity related to a velocity change, and a perpendicular component related to a change of direction of the motion, using the data of experiment in 2012. Characteristics of the motion of a curling stone related to the velocity and angular velocity are investigated with parameters such as the tangential and perpendicular acceleration of the stone.