Work, energy, and power | AP®︎/College Physics 1 | Science | Khan Academy

Learn about kinetic and gravitational potential energy, understanding that a single object can only have kinetic energy, while potential energy is stored in a system of objects. Explore work as a means through which energy is transferred, and apply the principle of energy conservation to analyze changes in a system's energy. Express energy concepts using multiple representations, including bar charts, graphs, and equations. Define power as the rate of change of energy.

Overview

Added

March 18, 2026

Subject & domain

physics · work-energy-power

Grade range

Grade 9 (Freshman)–Grade 12 (Senior)

Page kind

Course

Introduction

Work, Energy, and Power Overview

  • Core Concepts:
    • Kinetic Energy: Energy associated with a single object.
    • Gravitational Potential Energy: Energy stored within a system of objects.
    • Work: The mechanism through which energy is transferred.
    • Energy Conservation: The principle used to analyze energy changes within a system.
    • Power: Defined as the rate of change of energy.
  • Learning Objectives:
    • Understand the distinction between kinetic energy and potential energy.
    • Apply energy conservation principles to physical systems.
    • Represent energy concepts using bar charts, graphs, and mathematical equations.

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