The Effects of Force and Motion on Simple Machines Changes in Matter & Energy Grade 4 Children's Physics Books
by
Baby Professor
English
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About The Book

There are simple machines all around you. Some may look exactly what they are while others have been built to be a little more complex. In this book you will learn about the science behind simple machines and how they are affected by force and motion. You will also read about the incline plane the lever the pulley the screw the wedge and the wheel and axle.
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