You push a swing.
With high-energy designs, exciting photos, and fun text, Lightning Bolt Books(TM) bring nonfiction topics to life -- Website.
But what exactly is a force? And how do Forces act on different objects? Read this book to find out Learn all about matter, energy, and Forces in the Exploring Physical Science series--part of the Lightning Bolt Books(TM) collection.
Forces are at work all around you.
Your brother pulls a wagon.
You push a swing