CAMBRIDGEUNIVERSITY PRESSPhysicsfor Cambridge International AS A LevelCoursebookDavid Sang,Graham Jones,Gurinder Chadha Richard WoodsideDEDICATEDTEACHERAWARDSTeachers play an important part in shaping futures.OurDedicated Teacher Awards recognise the hard work thatteachers put in every day.Thank you to everyone who nominated this year,we have been inspired and moved byall of your stories.Well done to all of our nominees for your dedication to learningand for inspiring the next generation of thinkers,leaders and innovators.Congratulations to our incredible winnerand finalistsWINNERAhmed SayaSharon Kong FoongAnthony ChelliahCandice GreenJimrey Buntas DapinFor more information about our dedicated teachers and their stories,go todedicatedteacher.cambridge.orgBrighter ThinkingCAMBRIDGEBetter LearningUNIVERSITY PRESSBuilding Brighter Futures TogetherContentsIntroductionHow to use this seriesHow to use this bookResource index1 Kinematics1.1Speed1.2Distance and displacement,scalar and vector1.3Speed and velocity1.4Displacement-time graphs1.5Combining displacements1.6Combining velocities1.7Subtracting vectors1.8Other examples of scalar and vector quantitiesAccelerated motion2.1The meaning of acceleration2.2Calculating acceleration2.3Units of acceleration2.4Deducing acceleration2.5Deducing displacement2.6Measuring velocity and acceleration2.7Determining velocity and acceleration in the laboratory2.8The equations of motion2.9Deriving the equations of motion2.10Uniform and non-uniform acceleration2.11Acceleration caused by gravity2.12Determining g2.13Motion in two dimensions:projectiles2.14Understanding projectiles3Dynamics3.1Force,mass and acceleration3.2Identifying forces3.3Weight,friction and gravity3.4Mass and inertia3.5Moving through fluids3.6Newton's third law of motion3.7Understanding SI units4 Forces4.1Combining forces4.2Components of vectors4.3Centre of gravity4.4The turning effect of a force4.5The torque of a couple5Work,energy and power5.1Doing work,transferring energy5.2Gravitational potential energy5.3Kinetic energy5.4Gravitational potential to kinetic energy transformations5.5Down,up,down:energy changes5.6Energy transfers5.7Power6Momentum6.1The idea of momentum6.2Modelling collisions6.3Understanding collisions6.4Explosions and crash-landings