In simple terms, energy is a measurement of how much stuff you can do. Specifically, it is how much potential something has to do work. There are many different kinds of energygravitational potential, kinetic, electric potential, and more. Energy is the source of many ydecades of research, and is responsible for explaining so much about the physical world, especially at the sub-atomic level. Like all entities of physics, energy has laws that it must follow. This is just an introduction to what energy is and how it can be calculated; to see how we can utilize the properties of energy, dive deeper into the course.
Energy is the ability or capacity to do work. Work is the process of moving an object. Therefore, energy is the ability or capacity to move an object.
Energy can be transformed from one type to another. You can transfer energy from one object to another by doing work.
The work done on a system by an external force changes the energy of the system.
Kinetic energy is energy of motion, or the ability or capacity of a moving object to move another object.
Potential energy (U) is energy an object possesses due to its position or state of being.
A single object can have only kinetic energy, as potential energy requires an interaction between two or more objects.
The internal energy of a system includes the kinetic energy of the objects that comprise the system and the potential energy of the configuration of the objects that comprise the system.
Changes in a system’s internal structure can result in changes in internal energy.
Conservative forces are forces in which the work done on an object is independent of the path taken. Alternately, a force in which the work done moving along a closed path is zero. The work done by a conservative force is directly related to a negative change in potential energy W=-ΔU.
For a conservative force, the component of force along a line l is equal to the opposite of the derivative of the potential energy with respect to that line.
Energy & Conservative Forces
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
This book includes a comprehensive review of the key AP Physics C concepts and targeted strategies for acing every section of the exam. Additionally, the book includes two full length practice tests with full answer explanations.
The book offers a complete review of your AP course, strategies to give you the edge on test day, and plenty of practice with AP-style test questions. It includes 2 full length practice exams modeled on the real test, 3 separate plans to fit your study stle, review material updated to the most recent tests, and all the terms and concepts you need to know.