Viegas, Jennifer. <br/><br/>Kinetic and potential energy:  understanding changes within physical system/ Jennifer Viegas.  -- New York, New York:  The Rosen Pub.,  2005. <br/>48 p.:  col ill.;  24 cm. <br/><br/> includes bibliographical references, glossary and index. <br/><br/><label>ISBN: </label>1404203338 <br/><br/><label>Subjects--Topical Terms: </label><br/>Force and energy.<br/>Dynamics.<br/>Energy transfer.<br/><br/><label>Dewey Class. No.: </label>GR 513.6 V671 2005