Motion and Its Causes

Force and Newton’s Laws of Motion

What is meant by a law as opposed to a theory?

Laws summarize observations. They describe phenomena. A theory explains a large number of observations. Einstein’s theory of gravity explains Newton’s law of gravitation, which can be used to derive Kepler’s three laws. A theory cannot become a law because they are essentially different things.


This is a web preview of the "The Handy Physics Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App