2019年全国卷III高考物理试题(含答案)

20198614~1819~2163014ABCD15aaavvvRRRAaaaBaaaCvvvDvvv16mIII3060gIIIF1F2A1233==32FmgFmgB1233==23FmgFmgC1213==22FmgFmgD1231==22FmgFmg17h3mEkh10m/s2A2kgB1.5kgC1kgD0.5kg1812BBmqq0xyxA56mqBB76mqBC116mqBD136mqB19abcdt=0abv0abcdv1v2IABCD20at=0Ft=4sftbvtcg=10m/s2A1kgB2s~4sF0.4NC0~2sFD0.221qqq0abAabBabCabDab17422~3233~3812922.50.1s11A.B.C.D.233abcab=24.5cmac=58.7cmg=___m/s2223.1098.5100A15k50AR014kR11500R25000~99999.9E=1.5Vr=1.51aRR1R22bab2575ab3______kc_______24.12OPOmABABqq0AOv0PtBOP2tg12BP25.20ABmA=l.0kgmB=4.0kgAl=1.0mABEk=10.0JAAB=0.20g=10m/s2AB1AB2ABAB3ABAB33[33]15152102.0cm2.0cm76cmHg296Kii34[34]1515________122435130ABCDE210ABCA=90B=30BCABACiiiABBCAB201914D15A16D17C18B19AC20AB21BC22(1)A(2)(3)9.7231900R124553035000.0241EBamg+qE=ma2211()222tagt3mgEq2BOv1PEkOPh2k112EmvmghqEh102tvvt212hgt222k0=2()Emvgt251ABvAvB0=mAvA-mBvB22k1122AABBEmvmvvA=4.0m/svB=1.0m/s2ABaABBBtBsBBBmamg212BBsvtat0BvattAAAAtsAsA=vAt212atsA=1.75msB=0.25mtABA0.25mB0.25mss=0.25m+0.25m=0.50m3tABvA2211222AAAAABmvmvmgls7m/sAv11ABABvAvBAAAABBmvmvmv12222111222AAAABBmvmvmv131112133727m/s,m/s55ABvv14ABAsABsB222,2AABBasvasv1514150.63m,0.28mABss16sA0.91mABsss1733[33]11mLS2ilShhVpV1p1pV=p1V1p=p0ghpgp0V=SLh1hV1=SLhL=41cmiiT0T10VVTTT=312K34[34]1BDE2iABsinsininn+=60=Bi=60n=3iiisinsini=nBCcsinc=1nc=+30sini=322