PPT-Work and Energy

A note on usage The clicker slides in this booklet are meant to be used as stimuli to encourage class discussion They are intended for use in a class that attempts to help students develop a coherent and sophisticated understanding of scientific thinking. Explaining the Causes of Motion in a Different Way. Work. The . product. of force and the amount of displacement along the line of action of that force.. Units: ft . .. lbs (horsepower). . Newton•meter. ©2009 by Goodman & Zavorotniy . The most powerful concepts in science are called 
"conservation principles". These principles allow us to 
solve problems without worrying much about the details 
of a process. . 14) explain the relationship between work and power (using narrative and mathematical descriptions) and apply to realistic situations (GPS, HSGT) (SCPH_C2005-14). 14a) calculate the work on a body by constant force. Chapter 8. Copyright © 2014 John Wiley & Sons, Inc. All rights reserved.. 8-1. Potential Energy. Potential energy. . (symbol = . U. ) . is . energy . (Joules!). Associated . with . configuration. Section 1: Work and Machines. Section 2: Describing Energy. Section 3: Conservation of Energy. Section 1: Work and Machines. Work. – the transfer of energy that occurs when a force makes an object move. Work is done when:. A . force . is exerted on an object. An object has a . displacement . in the same direction as the force. W=. Fdcos. q. SI unit for work is . Joule . (. J. ). 1 J = 1N*m (=0.7376 . You . need energy to force an object to move. You need energy to make matter change. . The . blowing wind, the warm Sun and a falling leaf are all examples of energy in use. .. . Energy makes motion and change possible.. Principles of Engineering. Work. . Work. (symbol . W. ) is the energy transferred when a force . F. is applied to an object moving through a . distance . d. .. The SI . unit of work or . energy is the joule (symbol J).. Principles of Engineering. Work. . Work. (symbol . W. ) is the energy transferred when a force . F. is applied to an object moving through a . distance . d. .. The SI . unit of work or . energy is the joule (symbol J).. People can conserve. Large percentage savings possible, but each individual has small total impact. Industry can conserve. Larger potential impact because of scale.. Datacenters are estimated to use 2 to 4% of the electricity in the United States. . Work Energy and Momentum Physics Unit 3 This Slideshow was developed to accompany the textbook OpenStax Physics Available for free at https:// openstaxcollege.org/textbooks/college-physics By OpenStax Unit 4: Work, Power, and Energy I. Work When a force acts upon an object to cause a displacement of the object, it is said that work was done upon the object. There are three key ingredients to work: Vocab. Energy – the ability to do work or cause change. Motion – an object’s position changes relative to another object. Force – a push or pull. Work – when the force exerted is in the same direction as the motion. is essential for life, and is required to fuel many different body processes, growth and activities. . These include:. keeping the heart beating;. keeping the organs functioning; . maintenance of body temperature;.