Tracts: Containing Mechanics, Or The Doctrine Of Motion; The Projection Of The Sphere; The Laws Of Centripetal And Centrifugal Force (1793) is a book written by William Emerson. It is a collection of three tracts that cover various topics related to mechanics and physics. The first tract, Mechanics, or the Doctrine of Motion, discusses the laws of motion and their applications in mechanics. It covers topics such as momentum, force, acceleration, and...