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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.
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.
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.
Online Textbook. These notes were updated in 2022 to reflect corrections that readers have noticed. Chapter 1: Introduction to Classical Mechanics (PDF) Chapter 2: Units, Dimensional Analysis, Problem Solving, and Estimation (PDF - 4.5 MB) Chapter 3: Vectors (PDF - 4.4 MB)
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 the concept of the potential energy • To understand the relationship between work done and the potential energy • To use gravitational potential energy in vertical motion • To use elastic potential energy for a body attached to a spring • To solve problems involving conservative and nonconservative forces
Energy. 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.
