Work, energy and power. 

 - Videocassette (VHS)(24 min.) : sd., b&w, 1/2 in. 
<br/><br/> Instructional film about three concepts of physics- work, energy and power. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Force and energy--Study and teaching.<br/>Work--Study and teaching.<br/>Power (Mechanics)--Study and teaching.