Work and Energy covers the Physics field Work and Energy . Theory of Forces , Work and Energy is covered in different chapters . The user before going to handle exercises is given some questions of understanding . The style of these questions require a deep knowledge of these meanings . Exercises are organised in different chapters as to cover special cases as springs , chains , work-energy theorem , floatation , power give the user a deep view inside Energy and Work in Nature. Users with an intermediate background can imediately go to exercises . It is a must have tool for anyone attending a physics class , a teacher will find it useful , a student will find it a treasure and parents can help their children . On the other hand if you have been never related to physics its a start on your effort to start explaining the world around you .This version of the app has full screen ads from Amazon or VSERV.