Working with Vectors Vectors?are used throughout mechanics to describe forces and motion ?How are Vectors used in Mechanics? Vector?questions are often embedded in a Mechanics context Vectors will ...
Modelling Assumptions What is modelling in Mechanics? Mechanics uses?modelling?to solve problems in real life situations We use?assumptions?to simplify real life problems in order to turn them into...
Types of Force What is a force? A force is a?vector?quantity, it has both?magnitude?and?direction A force is a push or a pull on an object A force is measured in?Newtons In A level mathematical mod...
Derived Units What are derived units? Derived units for quantities such as velocity, acceleration and force etc. are combinations of S.I. units Speed?or?Velocity?= distance ÷ time?=?m/s or m s-1?(V...
Fundamental Units What are fundamental units? Fundamental units?or?S.I. units?are the international standardised units used around the world The three main units you will be using are: Length?measu...
Scalars & Vectors Mechanics uses a variety of different scalar and vector quantities. What are scalars? Scalars?are quantities without direction, they only have a?size (magnitude) e.g. a?speed?...
Edexcel IGCSE Physics: Double Science 復習筆記：3.1.5 Electromagnetic (EM) Waves Properties of EM Waves Electromagnetic waves are defined as: Transverse waves that transfer energy fro...
Edexcel IGCSE Physics: Double Science 復習筆記：3.1.4 The Doppler Effect The Doppler Effect The?Doppler Effect?is defined as: The apparent change in wavelength and frequency of a wave...
Edexcel IGCSE Physics: Double Science 復習筆記： 3.1.3 The Wave Equation The Wave Equation All waves obey the?wave equation, which is used to calculate the?wave?speed: Where: v...
