Energy, forces and motion /   Alastair Smith and Corinne Henderson; 
edited by Laura Howell. 
 - New York :  Scholastic,   c2001.   
 - 64p. : chiefly col. ill. photo 
 -  The Usborne internet-linked library science   .
<br/><br/> Includes index <br/> 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>CIR 531.6 Sm51 2001