How does gravity make Earth spin around the Sun? How do racing cars slow down? What can reduce friction? This book explores all about mass, machines and forces. Using engaging visuals, see how they govern what we do and how they can make our lives easier. This book is part of the Science is Everywhere series, which demystifies the key science topics and shows how they relate to the world around us with fun, colourful graphics. These books are ideal for children aged 9 plus who are studying science, or for young readers who want to get to grips with science in a fun way.