Meet Force and Motion they're here to introduce readers to the world of physical science! Alongside the duo, students will learn about mechanical force, gravity, distance, speed, acceleration, friction, and simple machines. Readers will meet Galileo Galilei, who'll demonstrate his historic experiments. An activity at the back of the book encourages readers to become scientists themselves. For more information about the science that powers our lives, check out other titles in the Building Blocks of Physical Science series!