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Energy is defined as the capacity to do work and comes in different forms: Gravitational potential energy - this is dependent on the object’s position in a gravitational field and its mass. It increases as an object’s height above the ground increases.
by teacher candidates as part of the EDCP 357 physics methods courses at UBC. An 8 kg block is launched from point A to point B over a rough surface. As the block passes point B, it has slowed down to a velocity of 4.0 m/s and it has generated 36 J of heat energy.
problems in physics: **Energy is ALWAYS conserved** Kinetic energy K is energy associated with the state of motion of an object. The faster an object moves, the greater its kinetic energy. Potential energy U represents stored energy, e.g., in a spring. It can be released later as kinetic energy.
To understand energy and conservation of energy, we must first define some terms: work, kinetic energy (KE), and potential energy (PE). We’ll get to PE in the next Chapter.
Part I – Energy and its Uses. 2. Units and scales of energy use (PDF - 1.1MB) 3. Mechanical energy and transport (PDF) 4. Heat energy: Conversion between heat and mechanical energy (PDF ‑ 2.9MB) 5. Electromagnetic energy: Storage, conversion, transmission and radiation (PDF - 7.7MB)
Definition: The capacity to do work. Different types of energy . Kinetic Energy . Gravitational Potential Energy . Elastic Potential Energy . Sound, Thermal, Electrical, Light Energy . Conservation of Energy.
At the most fundamental level there are three kinds of energy 1. Kinetic energy – energy due to motion 2. Potential energy – energy due to interaction a. Gravitational potential energy – interaction between the Earth and a mass b. Elastic potential energy – interaction between a spring and a mass 3. Rest energy – internal energy to a body
