Passing your Physics I class is totally doable, thanks to Physics I For Dummies. When your teacher's explanations make you go, "Whaaa?" reach for this book, where you'll find clear and entertaining explanations of physics of principles. Gravity and mass? Check. Energy and work? Got it. Thermodynamics? Yup. It's all here, and we've even thrown in some fun facts and theories, just to make life more interesting. Plus, we give you a math refresher, so the algebra won't trip you up. May the forces be with you.