This document appears to be notes from a science class covering topics of mechanical energy, including potential and kinetic energy. It defines kinetic energy as the energy of motion and provides its formula. Potential energy is defined as stored energy due to an object's position or deformation, including gravitational potential energy which is calculated using mass, gravity, and height. Examples are provided to demonstrate calculating kinetic and gravitational potential energy. The document also reviews factors that affect energy and provides activities to check understanding.