energy

Title: Energy
Energy is:the ability to do work
in physics,energy is a scalar physical quantity that describes the amount of work that can be performed by a force,an atribute of objects and systems that is a subject to a conservation law.forms of energy include kinetic,potential,thermal,gravitational,sound,light and elastic.the forms of energy are often named after a related force.

http://www.youtube.com/watch?v=klFoqqgLHCA


by: Tan Yane,2E3

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