The special theory of relativity has what effect on measurementsdone today? (a) None whatsoever, becauseany correction would be negligible. (b) We need toconsider the effects of relativity when objects moveclose to the speed of light. (c) We should always makea correction for relativity because Newtons laws arebasically wrong. (d) It doesnt matter, because wecant make measurements where relativity wouldmatter.
Chapter 17 Notes Sec. 1: Newton’s First Law: If no force acts on a body, then the body’s velocity cannot change Newton’s Second Law: F = ma Newton’s laws of motion allow us to analyze many kinds of motion Conservation of energy Ki +Ui = Kf +U f In an isolated system where only conservative forces cause energy changes, the kinetic energy and potential energy can change, but their sum cannot change Gravitational and electro-magnetic forces: this what we experience!!! Frictional force, spring force, normal force, tension force in a string, aerodynamic force … are results of electromagnetic force Sec. 2 An electric charge has a magnitude and sign. It is either positive or negative. Electron has negative electric charge. Proton has positive e
