SAT2物理常用公式总结pdf版

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1、更多SAT考试资料，请访问http://sat.tiandaoedu.comSATII物理常用公式总结http://sat.tiandaoedu.com天道留学www.tiandaoedu.com更多SAT考试资料，请访问http://sat.tiandaoedu.comSATIIPHYSICS1.1verVectorandForcestorque=forcelengthofmomentarmthesumoftheclockwisemoments=thesumofthecounterclockwisemomentsMotionandForcesdistancecoveredaverage

2、speed=timerequireddisplacementaveragevelocity=timedistancecovered=averagespeedtimeS=vtavchangeinvelocityacceleration=timerequiredforchangevvfivattMotionwithconstantacceleration(startingfromrest)vv/2avfvatv()gtff1122SatS()gt2222v2(asv2gs)ffvaveragespeedavvfinalvelocityfaaccelerationt

3、elapsedtimesdistancecoveredvvifvav2vvatfi12Svtati222vv2asfiFtchangeinmomentum=masschangeinvelocitymomentum=massvelocityCentripetalForce2vacr天道留学www.tiandaoedu.com更多SAT考试资料，请访问http://sat.tiandaoedu.com2mvFcr2rvT24ra2TGravitationalFieldsGmm12F2rGMsvrWork,Energy,SimpleMachineswor

4、kforcedistancegravitationalpotentialenergy=wh=mgh12kineticenergy=mv22energyproduced=mcforceoffrictionduringmotioncoefficientofslidingfriction=normalworkagainstfriction=frictiondistanceobjectmoves12elasticpotentialenergy=kx2workpowertimeforcedistancepowertimeresistanceactualmechanicaladvantag

5、e(AMA)=actualeffortFRAMA=FEworkoutput=resistancedistanceresistancemovesworkoutput=FRRRworkinput=effortdistanceeffortmovesworkinput=FSEE天道留学www.tiandaoedu.com更多SAT考试资料，请访问http://sat.tiandaoedu.comUnderidealconditionsthereisnouselesswork.Thenworkoutput=workinputFSREIMA(idealmechanicaladvantag

6、e)FSERForamachineworkoutputefficirncy=workinputAMAidealeffortefficiency=IMAactualeffortweightofobjectlengthofplaneIMAidealeffortheightofplaneFluidMechanicsmassdensityvolumeForsolidsandliquids:densityofsubstancespgr..densityofwaterweightofsubstancespgr..weightofequalvolumeofwatermass

7、ofsubstancespgr..massofequalvolumeofwaterFPAPhdg(h=height,d=density)FhdgA2FA(diameteroflargepiston)IMA2fa(diameterofsmallpiston)Forasolidthatsinksinwater:weightinairspgr..apparentlossofweightinwaterFora