AP物理B牛顿力学大纲和真题 (1).pdf

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1、AP物理B牛顿力学大纲和真题主讲：云舟韩锋老师AP物理老师课程地址：www.duobei.com/course/3606734135AP物理BMechanical总复习云舟国际课程中心韩锋Page1ContentNewtonianMechanics35%FluidMechanicsandThermalPhysics15%ElectricityandMagnetism25%WavesandOptics15%AtomicandNuclearPhysics10%Page2Reviewofuniformlyacceleratedmotion

2、Themainpointistheaveragevfivataccelerationequalstoinstantaneousacceleration12xvtati2222axvvfiPage3Two-DimensionalMotionVectorsFramesofReferenceCoordinateSystemsreferencePage4AdditionofvectorsPage5Dotproductionji·i=j·j=k·k=1i·j=j·k=i·k=0i,j,k分别为x，y，z轴上的单位矢量iAB

3、ABcosCABABABxxyyzzPage6CrossproductionPage7ZouXiaoshiRule（Crossproduction）(如下图，在A×B的坐标分量表达式中，只要矢量A和B的分量是按x，y，z轴也就是i，j，k逆时针旋转即为正，反之为负)ABABsinC(ABABi)(ABABj)(ABABk)yzzyzxxzxyyxABABcosCABABABxxyyzzPage8Two-DimensionalMotionRelativemotionVvvearthrelrefPage9

4、RelativevelocityVvvearthrelrefVrelativeVearthVreferencePage10AdditionmethodsusingthecomponentsofvectorsRRRxyRRcos,RRsinxyPage11TheResultantofTwoMotionsPage12parabolaPage13CircularmotionPage14angulardisplacement：radianΦ=S/R1rad=57.3ºWholecircularradiansis2πPage15Angu

5、larvelocityω=ΔΦ/ΔtPage16UniformCircularMotionConstantspeed(notvelocity)Sω=2π/TΦSpeed=2πR/T=RωPage17Centripetalacceleration／ΔV/V／=／ΔR/R／a=／ΔV/Δt／=／ΔR/Δt／*V/R=V²/Rφ=RΔθ/Δt*ωR/R=ω²R“a”isbothaverageandinstantaneous！a=v²/RPage18200E4PhysicsBPage19MotionchangedbyforcePage20Newt

6、on’sLawsofMotionFirstLawofmotion:Everybodycontinuesinitsstateofrest,orofuniformmotioninastraightline,unlessitiscompelledtochangethatstatebyforcesactingonit.(inertia)Point:Forceisthereasonofstatechangingofmotion.Page21Newton’sLawsofMotionSecondLawofMotion:Thechangeofmotion

7、isproportionaltotheappliedforce,andisinthedirectionwhichthatforceactsFmaPage22Newton’sLawsofMotionThirdLawofMotion:Foreveryaction,thereisanequalbutoppositereaction.Physicsmeaning:theconservationofmechanicalenergyPage23Homework韩锋日志：云舟AP自学真题精粹：物理B——“运动学牛顿力学”2012-03-0300:32

8、(分类:AP物理B)Page24200B4Page25200E4Page26Energy不同形式运动的通行证1/2mv²=3/2*kT量子力学P²/2m，P=