Energy is the ability for people and things to do work. This power exists in many forms, including mechanical energy. This title explains the properties of mechanical energy and how we encounter and use it in everyday life. Readers will learn how mechanical energy exists as both potential and kinetic energy and how that's so unique. Full-color photographs and helpful sidebars make the material approachable for even reluctant readers. Thoughtful questions will encourage them to think critically about the topic.