全国Ⅱ卷2020年高考理综物理真题变式汇编

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2020
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18D.ᵯᜫḄ^᳛21U2ூ&'(ᫀ௃BC6-3ூẠ௃?g[ᵯuḄᵯ5〈EC᝞CᡠE~ᵯ>Ḅᵯឤᓣ8ᘤ஺{8ᘤᔣᵨᡝᵯᵯḄzᵯOt8ᘤḄ-ஹ9ᙌ;ᦪ=t41,Ḅ9ᙌḄ8ᵯ᝞C¡ᡠERotᵯO஺R¢8ᘤ£tᳮ}8ᘤᑣGᑡIJKḄ0LPA.8ᘤ¤Ḅᐭ^᳛3^᳛=t41B.8ᘤ¥-ᙌḄᐭᵯt880VC.ᓣ8ᘤ஺Ḅᵯᜧ8ᘤTiḄᐭᵯD.¦RPᜧYᓣ8ᘤ᜜Ḅᵯᜧூ&'(ᫀ௃BC6-4ூ*+௃?~ᵯᔆ-ᩭᵨUkVḄjᵯᵯ©ᩭᦋᵨᓣ8ᘤ¢ᵯᓣᑮ220kVᵯ〈Ḅᵯ^᳛«0P,RᵯmḄᵯOtR,ᑣGᑡIJKḄ0LPA.᪷2¬1=U/R,ᵯ©ᵯḄᵯjt-ᩭḄ20®B.᪷2¬1=P/U,ᵯ©ᵯḄᵯjt-ᩭḄ1/20C.᪷2¬¯=/R,ᵯ©ᵯḄ^᳛ὑ¢ᜧt-ᩭḄ400®D.R⌕ᵯᜫḄ^᳛8±¢ᵯḄ²³fgt-ᩭḄ1/20ூ&'(ᫀ௃BD6-5ூ*+௃᝞CᡠEtvwᵯḄEC8ᘤᙳtᳮ}8ᘤᓣ8ᘤTiḄ-ஹ9ᙌḄ;ᦪ=tki.8ᘤT2Ḅ-ஹ9ᙌ;ᦪ=tk2.ᓣ8ᘤ-ᙌ´ᐭ!ᵯ"=U,"SinewḄjᵯ%ᵨᵯ*ᜓḄzᵯOtRL±£t¶ᵯOPᵯzᵯOt2r,Rᵨᡝ·ὑḄ^᳛tP.ὃ⇋ᐸº»Ḅ¼½ᑣᵯᜫḄᵯAU{ᵨᡝ¾¿ḄᵯUᑖÁt

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20D.ᵯὑḄ5åfgூ&'(ᫀ௃BCD6-9ூ*+௃
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᎔.ᘤḄF-t᝞ᡠg=10m/s)ᑣ%(1)'ᙽ)*+,Ḅ-᥅/0ᦪ2=4ᶍ*+)678☢,Ḅ᥅/*+:;<-Ḅᜧ*2=—m/s2.(2)@ABᘤCD)'ᙽ,ḄEFG67HDᶍIJKᵫMNOPḄ᥅/0ᦪuḄCRSTU“Wᜧ”ᡈ“W*”).ூ[\]ᫀ௃(1)0.20.25(2)Wᜧ9-5ூaᓣ௃᝞aᡠdReMḄ'ᙽAhᙠjklm3oCeqrᘤstu'ᙽAᑮᘤCḄwxᦪy@z〈ᑮ|}~o|}~ᜐᳮᙠo'ᙽAḄqrJz,(s-r)᳛Jz,(:).᦮⁚Ḅ☢o☢Ḅe/ஹe(g=9.8m/s2,STᶇJqᨵᦔᦪ)(1)¡¢'ᙽA-£jklmᔣoḄ¥AḄ¦§᝞ᡠb.©§ª'ᙽA«'zḄa=m/s?,᥅/'ᙽA<-Ḅ®¯.(U“°G4ᶍ''ᡈ"G°4ᶍ”)(2)M³ᵨᩭA¶·¸¹º;».@Az¼½ᦋ¿,A¶dRJ;z)ᡂ[ÁḄᐵÃÄ@Az¼½ᦋ¿,A¶J;z)dRᡂÅÁḄᐵÃ.(3)ujklmᣚᡂ'Ç'ᙽAᣚᡂ'ᙽ4,¢'ᙽHJ£'ÇᔣoḄ¥Ḅs-r§᝞c.§GËÌᵫ⌼ᡂḄ¼½§Îª'ÇḄÏÐ9=(ᵨÅÑÐÒᦪ⊤)'ᙽ)'Ç,Ḅ-᥅/0ᦪ஻=.

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ᫀ௃0.3249-9ூ௃CᱥᳮF᜜HᑭᵨJaLḄMNOPᱥQRᐸᡠUᔠ᜜WXḄᐵZ.JL0N[\]^_Ḅ`ᩈbcd+N0ᐸ-ef!gh"#ihjkl"#0geR+ᙠᩈb_Ḅ"nop0qge2rᢞtṹ.v\]L2ᵨḄtṹᐳᨵN=5{0|{<=ᙳ0.010kg.\]᝞'15{tṹᐰ+ᐭnL0ᙠ`ᩈb$'_〉Ḅᱥᙽ0ntṹ2?ᙠᩈb_ᒴ'".2஻&஻=1,2,3,4,5{tṹᢞᙠhj-e0ᐸN-஻{tṹᶇᙠnᑁiᵨᢥnhjRᩈbd.

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⚪᪆௃nop᪆(1)eឤ$Ḅᜧ3?R),3ᳫᑮ¡CTUᡠµ(1)জ2kঝ-1.51ᔠ$Ḅᜧ3?F.ᵫ$ḄᔠᡂØᑣᨵ(2)ᔣqrᔣAt஺uᔠᙠvwḄᐳyᵫYzឤ|}C—=tanaজmg]ᓃ=2mv'জà=(mg)2+Dঝ~BᢱABZe3ᳫᑮ¡CTUḄᜧ3?v,ᵫãäåæx2vr0টὶজঝঞট-C(2)e3ᳫᑮ¡ATḄᜧ3?KîCDJLB4,121.5%⚪@ᦪBCḄ=|%ট5Mg32ᦑvPḄᜧg%,QḄᜧv0Fᳫᙠ☢ᑁḄᙊᕜKLMNᐺPQR(2)vQᓣḄ¶·஺ᵫ+,-C⚪Sᳫᙠ☢ᑁḄᙊᕜஹUVᑖ᪆ஹYஹZ0—V/)|2=2'(-2gsin0)-1ঠsin஺[\ᨵ]^ᔠNᐺ`a.ὶজঝঠ-C12-3ூcd௃ூᫀ௃(1)জ2kঝ-1.5112(2)1.5V

105PtQ»⌕½¾¨Ḅ¿À'%2v=|x(^.)2঩o3v()v¨·Pᵫ|ᳮCÏ஺ᓣḄ¶⛳·஺ᵫ+,-থC1212,-wv=-mghঢ0-VO32=2•(-2^sin^)-ಳ02]'sineὶজঝঠঢ-Cὶজঝঠঢতথ⚚×Ø-CÂ=Ã஺ণ=(()24಴2525gÙ^ÚÛ"ᱥᙽ஺ᓣḄ¶஺tQḄ¨PQḄᑖÅVP2>VQ2,7v24=()"!%("=12,3……)ವᵫYzឤ|}C2525g(3)ßPஹQàᑮH'âᱥᙽᑮRᜐḄÚä·âᱥ]ᵨ2¨,nvP2+4ÆÇ஺2তᙽᐰæçᵫ|ᳮCᵫ]°zឤ|}C0——/wv2=-{tn+4m)gH-tan9•4mgcos0----ಶ01-)121/02sin஺5]¢2~=2”“Ê2+--4mvথ02oCὶজঝঠঢতথ-C2“=£ಷ"=v|'?”>18g(4)஺vé◤⌕Ḅ'(ëᵫ+,ᑗ2=|X¢-C¨஺ᓣḄ¶hi,·Qᵫ+,-C%=2Msin6ಸ0-v2=2-(-2gsin0-fi2>sin®PᑮZ☢ìí'ḄV,”'◤⌕Ḅ'(dᵫὶজঝঠঢতথÍC+,-C”.~-2525gJ=v+gtsin஺ಹp|2ᡝt஺»⌕½¾ÏḄ¿À'“3v/2-v2=2sgsin஺಺PP1¨Ï·Pᵫ|ᳮC|mvm-kmv^=-mgh஺Aᑮ஺véᜐᒴéḄ'(P2ὶজঝঠঢতথ@^ÑC%2=(fP1)-g‘3sin0಻Â=Ò)%ßAtᢱï(Ḅðñᨬ't=2t+tx23PQḄÏptQḄᑖÅVP3ஹÇ23,ὶಸಹ಺ó0)-ôᐭᦪBCᵫYzឤ|}CS=M-3ö200gsin8mv=mv+4mvদ03pie3|ூᫀ௃(1)v=5m/s(2)4N*s(3)8JBᵫ]°zឤ|}Cூ
⚪᪆௃nop|mv032=~mvP3+1-^mvQiধ÷⚪ᑖ᪆p(1)Bᙠøùúûü'Ḅ᳛VB,ᑮàCḄ᳛vc,ὶজঝঠঢতথ@88®C3.ஹÓvG᪷BBាᑮᨬCᨵR,==mR—.........জᑮBᑮᨬCᵨᳮ:

106st?ឤ-2mBgR=-mBVc2--IBBYB2---------ঝgMv=EMv^+Emv1ᵫজঝVB=5m/s.2ឮ"ᑮ#ᯠ%&'BḄ)᳛+vi,,ᔣ.+/0ᔣ1v=3.75m/s0Ḅឋ34ᓄ6BḄ1Ep=-invi2ঞB2
4ᵫv"uvw1x〈zḄ)&᪷9:ᳮᨵI=rriBVB-mBVi..................—v=5m/s4ᵫঞটI="-4"Ns,ᐸᜧ>+4Nsx〈z[஺ᑮ”Ḅ%&
3AḄ)᳛+v,\,,ᔣ.+/0ᔣ1x=36.25m᪷9:?ឤAᨵmBVi=mBVB+nuvA-----ঠᱥZᙠx〈z~Ḅ+᪷9ᳮᨵW=—mAVA2------ড2Ax=1.25mᵫঠডW=8JᱥZᙠx〈z~Ḅ)&+mx〈z᥅ᦪ+ὃᳮE:?ឤAE:ᳮᑣFGHjumgcos37°-nigsin37°=maI⚪ὃKLMNOP.ᡃS✌ᐜ⌕WXᱥZḄ1⌕ᵫnᐵᨵ[⚪\]^Oᩩ`abcde⚪.ᐸ]ᵨᳮ'fgEr/=~fn[v4-*)+1஻gxsin37°+cos370-AxWXẆij]ᔜlmḄn.ᵨ:ᳮj:?ឤA'⌕o/0ᔣ1⌕pqr:Ḅe⚪.E=287.5J12-6ூ'Ạ௃ூᫀ௃1%=5m/sE
2F=I5.1NE12-7ூ௃ூᫀ௃2m/sூ
⚪᪆௃:(3)%=3.75m/sE(4)£=287.5JAḄ)&+ᓃ1CḄ)&+z1ᵫ:?ឤwூ
⚪᪆௃:
14BBḄ)&+1ᑮ஺')&+ᓃ,mAvo^mAV+mvAccᵫuvwᓃ=4m/s,PQᵫᳮᨵAஹB:?ឤ1AஹBḄᐳ)&+ᓃ1ᑣ-mg(R-Rcos37°)=g஻᳾gmv1%+8%=%+᝞¡K:ᵫ¢AஹB᦮Zា¥¦§¨C1ᦑv,=5m/sW=%
2Bᙠ஺'1ᵫAὶ«¬~®wF-mgcos37°=VA=2m/sூᫀ௃D£10ᔣ·¸ᔣ¹E212-8ூ'Ạ௃F=15.1N,,13ºr᪷9AC¯⍝Ḅ±lᜧ>+15.1N,0ᔣ²³´L=—LF(3)஻=---34gZ,ᔣµூ
⚪᪆௃3AஹBAḄ)&+ᓃ1BḄ)&+»,ᵫ:?ឤ<1¼½¾]1·¸0ᔣ:?ឤ஺¿À½¾)&+,ᔣ.+/0ᔣ1ᨵMV=+/nv,Q

1072mv-m-2v=mv+2mv'2¡ᱥᙽ¨ÃÄÀḄ᥅l000¼ὅÀ☟ÇÈḄÉÊsi,ᵫᳮM=-᧎10ᔣ·¸ᔣ¹22¡¿ÀÐÑÇḄ]1½¾¸ᙳ)&Ḅᜧ>^OL=lmwÞOᱥᙽ¨.ßÄàᐳbá6ã.ÊÓÔḄ!1ᡠ¬ᙠ'Àᑁ1½¾¢ᙢ☢ḄÚ23¡ÃĨᱥᙽÈḄ)&ᑖæ+V|ஹV2,Ḅ)&éᜧ>ÊÓÔḄ!.ᨵᑖæ+Vl\V2",ᨵ2L'+2L'=LL'=-L33¡ÓÔ¢ᙢḄÚé+L=-LÓ3ᓽíãÃߨᱥᙽbáã)&îᣚ1ᙠᙶ᪗~ÓÔḄ)&ᜧ>¼ὅḄ)&u÷᝞uᡠø:a=—=/JgmÓÔmò)&+wḄᒴõ)ö÷1ᨵ0-º=-2aL᱐4gL᪷ᦪᑖ13ஹᱥᙽḄv-tᙠ!ᩩ#$12-9ூúû௃ூᫀ௃(1)2m/s(2)lm/s(3)Ḅᒴ&'()*+,ᣚᦑᵨᒴ&'0*()12340.25m+.ᑣூ
⚪᪆௃56:819:A<ᙊ>ᨬ@AᑮᨬCAḄDEFᵨGHIJឤL2ᨵ:6Q12N᪷OP=mgRDḄV-tᡠᒹcḄ▢eXᑖ☢gᓽḄijᜧlS2,A8oῪqrs☢gᐳ13uvwu☢g0.5L,ᐸ|}u☢QV=2nVsgᙳL.9829Aᙠᙊ>U⍝WXYB[\])^Jឤᨵ:(m+m)v'mv,QM=lm/sAHA839:ABw)DEᵫ)ILᳮQ:ὃA)^JឤL2ஹ()Ḅ12+mB)gL=—(rnA+,QL=0.25m13-1ூẠ௃ூᫀ௃B12-10ூᓣ௃ூᫀ௃8192.5m/s82968395sூ
⚪᪆௃56:A.v)GvL2¡¢Iᑴᡂ,12.75mᦑA┯¦;ூ
⚪᪆௃56:B.ᦔ᳛100%ḄG«¢IᑴᡂḄᦑB¬;⚪ᑖ᪆819!ὅ+[:☟4'v,ᵫ)^JឤLC.ᵯ°±²D³ὑᵯIµI¶^

108º@Ḅ±¸᜜ᦑC┯¦;&ᓄᨵ“vq¾''ÀÁḄÂÃÄPᦑc┯:?TᓣABᦑ7#C᜜Dᔾᦈ>FD┯஺D.ᙠᐸᓄḄᐰᓄᑁ,ᦑ⌱A஺᝞!Ḅᱥ#$%᥅'()ᩭᑁᐰᓄ13-7ூI௃ூᫀ௃CᦑD+,஺ூ
⚪᪆௃HI:ᦑ⌱ADoA.JKLM!NOFPឤRSJTLM!NO>(13-4ூ'Ạ௃ூᫀ௃CbJTRSᙳ^dᑴᡂA┯;ூ
⚪᪆௃HI:B.hiFjᡈᓄḄlmᙳnoFPឤapqrsA.Uᨽ!3WXᙠY#Z[#⚩]Ḅ^_ᑣ!a3Yᜫ,B┯;#ᑖuḄ!v3Y#ᑖu^_ᑣ!Ḅw᧜ᦑA┯:C.“1⌕{|}~{|aᔛ₝”NOBFPឤRS,B.JKLM!NwB>(bJKRSJTLM!Nwv3aḄC+,:B>(bJTRSᓽNwBKᑗ>ḄlmᐹᨵD.“ᐰ§!”¨⊤☠¨Ḅᢘ!¤¬ᩩᓄᵯᔣឋᡠaᑴᡂᦑB┯;D┯஺C.ᙠaḄᘤᑁḄ7#ᓣAᑖuᙳᦑ⌱C஺!/ᜧᵫᳮRS7#Ḅ/ᜧv7#ᑖuḄ13-8ூᓣ௃ூᫀ௃Daᑣ7#ᑖu8ᘤᓫ¢☢¤Ḅᙳ¥ᵨ(/ᜧ,ூ
⚪᪆௃HI:ᦑC+,;A.JKLM!aᑴ⌼ᡂ;Ḅ³3NOBFPឤRD.>Fa§¬ḄC¯ᱥ#°ᑮAᱥ#ᙠᐸ

109SA+,µ+᦮0B.᪷·>(bJTRSKᑗ¸>ᨵᐵḄ§ᯠlmpS+Pi2s+3஻2g=pஹS+p()2sQº3a⌮ḄB+,µ)?+ÂÃÄ7#ᔣ᜜DÅÆ>F0.5XI05J,ÇÂ᪷·>(JbJKR(2)A0BCDEᓄFBGHᑮJKLAt/=W+0=2.0xl05J-0.5X105J=1.5X105JSI+2SI25/7#ᑁ/ÔB1.5X10M,C+,µFAGHᑮKLD.᪷·>(bJKRSÕlmZᔾᦈḄ>FÖÖ/ÔSI+2SI45/■Fᑁµ᪷·ᳮ×7#Ø᝱mÚ>(bJKRSÕᓣḄQᑁA0ḄRSᓄUlmZ#/ᜧ8᜜:;ᔾᦈḄ>FᓄᑁÚ8᜜ᡠ:Ḅ;ᡠKRÛFḄᳮ×7#ᓣA1K,ᐸÕlmZᔾᦈḄ>FÜÝÕlmᔾᦈḄ>FD┯஺14-2ூ௃ூᫀ௃জ஻=30XYঝ2.67atm,ᦑ⌱D஺aᐰ13-9ூ34௃ூ
⚪᪆௃()*ூ
⚪᪆௃HIâজᐙAA0RScdeᑁfᨵA0hᐙᐭA0Ẇã⚪ᑖ᪆âJKLM!ᑴaᡂ3NwFPឤRSk+lᵫnoὡqr(bJTRS.ᡠM!3Mçaᑴ⌼ÆᩭḄB┯µèéêlᵯë:;?>Fᵫtᐭᦪv)<ì¯ḄèéᑁᔣìAḄèé᜜ja§¬ḄíîC஻=30X┯µᜋ/Ô³ᳮðñKᑗ§ᯠlmò3ᔣḼᑖu>!Ḅ^ঝdeᑁA0wx᝱RSôឋ/ÔḄᔣíîD+,µT=(273+17)K=290KὃöâὃB>(bRS}x᝱RS13-10ூ'Ạ௃ூ
⚪᪆௃HIâF=(273+37)K=310KA.JTLM!Ḅ÷×øaNOFPឤRSæᓾNOBde~+deᑁḄA0ᵫᳮqᳮ<>ḄFᓄlm3ᨵᔣឋḄ_SA┯âB.ᙠᐸúᓄḄ>Fᵫ¯ᱥ#û§¬ᙢT~rtᐭᦪv)<A0E°⌴ᑮAᱥ#B┯µp'h2.67atm>2.6atmCD.ᐰᓄᑁ᝞ᱥ#þÿ᥅
ḄaᐰᙠᐸᓄḄᑁᓾᐰᓄC┯D!.14-3ூ௃ூᫀ௃পp=1.2xl05PaY(2)14-1ூ'Ạ௃ூᫀ௃(1)FN=4mg.(2)m-54kgூ
⚪᪆௃()*(1)GH᦮0,ᜐ⊝x᝱ᑣᨵூ
⚪᪆௃()*pS\+%$2=PoS+pS+Mg2(1)+A,ᑖ᪆)

110p=1.2xl()5paA4=5cm2QḄឋ᪷vA0ḄDRᓄᨵ+ᑖA0,Ew᝱0ᓃ=஻4s2p(S1+S)A=pSx2L2t2RS

111Ẇk+lᑣᓃ=(4+%ᵯ=400001?×ᐭÍE᪷vᳮØA0x᝱Ù<஻þ஻00M2M3T஺Vi=-LS4tᐭᦪv)<×ᐭÿ
4=897Kpi=po+hFᑖ½¾A0ḄRS900K>7YL}᝱0ÛV=hS2X=(%+%)S1=2000cm,ᵫᳮ᝱3ᡠcJᑖA0Epox]LS=po+hhSpY=1.515x10''Paᵫ⚪3314-6ூ௃ூᫀ௃143cmY2265KH=-L+-L-/O44ூ
⚪᪆௃():1wÝLA0E6=38cmPt=p+pgh=86cmHg0//=76cmᎷ¥ß90஺RSBCᓄàáâãäᐰåᐭæç¹14-8ூᓣ௃ூᫀ௃1$ᨵ&2èᑣA0ET=450-150sinKPi=P-P8-2h=56cmHgூ
⚪᪆௃()0<1+,ᴻ.Ḅ01☢3S,67Ḅ89";,ᴻ.¥LAâéS4,ᑣᨵ<=>?ᔣABḄ
P\=Po+pg%)<Ꮇ+DEᑮ<=>?ᔣGB67HIJGKBḄ
/,=43cm>38cmP2=P-P8h20Ꮇ¥ᡂëᡠcAâéS43cmDELM9HNᵫ,ὡPQ2ìAâéS38cm,ᑣRS◤îï஺᪷vᳮØA0xpஹh\S=p2Hs᝱ÙL_p(L+h)Pt2H=50cmRSᐸèT=300K,)

1127}=(27+273)K=300K·᝱7'=(450-150sin<9)K஻2¸¹14-9ூᓣ௃ூᫀ௃জ10m&ঝ25m72=(37+273)K=310Kூ
⚪᪆௃()᪷»᝱জ;Aᔣ|}f~■B+BH}fIᑁᵫ,ὡ¼=ᓛ21%PQP,M=pSL஻=1.55xlO5pa(2)lᘤ☟j¿ÀBÁlᘤg
Âᜧ
kᓽP3=1.0xl05PaPi=2p°lᘤgÃkMNᓄᵫ,ὡPQKBBgḄ
3po>nᦑBHfAᨵÄᐭᦪ»Pi=Po+Ph16=1.5%ᵫSᙠÇM9ÂÇ
GÈÉÊËkS3ÊËlᘤgÈÉWᨵÈÉḄËÌPh=PaÍ=ᓃ=2p஺;S10mḄ6Ḅ
ᦑ6Ḅ9Ïᓃ3=10m15-1ூ௃ூᫀ௃9.79m/s2ÐÑ0.027m(0.02mঝᐭ6GᵫS6Ḅ
Aᔣ|}fIᑁ
aÒᑖ)ூ
⚪᪆௃()⌲ᜧ;
ᜧᑮᜧS2PoB<ᔣ|}f;Aপᓫ᤮ÃÖ×Øfᵫ⚪ᐸᕜÛាV}fᑮBᡠ9ᨬᜧKBIᑁᐰ¢£ᐭIITt60.8on”T=—=----s=2.027sᑁ+Bᔣ|}fx¤¥¦¢ᑖ
ᙳn30ᵫᓫ᤮ḄᕜÛÝÞᨵIᑁᵫ,ὡPQpSL=p2sx0nᑁᵫ,ὡPQ3/725L=p22s(L-x)04/4x3.142xl.Q2KBAᨵm/s2®9.79m/s22.027?pl=pa+pgK,ফবä᤮ḄᕜÛ"=2s,+ᐸ᤮À/஺᪷»ὶªh,„=25m214-10ூ354௃ூᫀ௃

113ᦑå/=2-x1.02m=o993mT22.0272ᐸ᤮À⌕ÐÑᓫ᤮ᙠA@᤮34/—0.25/=0.75/᪷8ᓫ᤮ᕜ9:,;A/=/-/=(1.02-0.993)/77=0.027moᓽ᤮ÀhÐÑ0.027m.15-2ூèẠ௃ூᫀ௃N᠒ᦑJᓫ᤮Ḅᕜ4ூ
⚪᪆௃ᑖ᪆:KLஹ4Oᐭ&(:í1î᤮ïYAðñᑮòóᨽõöḄ⚔øùúû9gNý᤮T-2+᝞TÀLHNᵫᕜÛÝÞLঝ)3+Uᓫ᤮VWXYZ[\᪷8]^_`ឤ;bUᓫ᤮ᙠT=2TTgᨬdeḄfgZᜧijkl᪷8⚪n;bopqfrs┑uḄ_vwᜫᦑBᓫ᤮ᙠᨬdḄgZyᯠAᓫ᤮jW,ᕜÛNᜧ᤮ïN᠒஺ᡠ|᪷8]^_`ឤ;bUᓫ᤮ᙠᔣA᤮~;|᤮ᑮফ᤮ïᙠAðḄᕜÛᑮjWḄYZᦑ஻A=஻B஺T=2/rூᫀ௃JJ-"1-COS஺915-4ᓣ௃2Vg5ᙠòóᨽõöḄ⚔øḄᕜÛூ
⚪᪆௃%&'ᓫ᤮Ḅᕜ9:7=2£,V஺ᑮb~Ḅὶª4T'=᤮ïḄBÁW᤮f⚣᳛ᡂ
ᓽᕜᡂᦑᵨV஺ᑮ஻ᵫ~_ᳮ:᤮ᙠᨽḄ⚔Ḅ▭Ḅmgl(\-cos6)=—mv2⍝Ḅ4RᑣV஺ᑮc63ூ"#௃1-mg2R-2mv2--mvூ
⚪᪆௃%&'¡¢ceজ)I+,-a/0Aᓫ᤮Ḅ᤮34/,᪷8ᓫ᤮ᕜ9:;ᑣm2-m-i—R&'ফ,-b/0Bᓫ᤮ᙠ?@᤮34/,᪷8ᓫ᤮ᕜ9:,/?=—L(l-cos;:;<§⚪ὃ©ªᓫ᤮ᕜ9:,«¬ᔠ~_ᳮ®bḄgZ,

114ᙠᙊᕜ~0¡¢ᨬYeᢣḄᙠᨬYe⍝±iᳫ³ᨵµ]᪷8ᓫ᤮ᕜ9:·ᵨL.ூᫀ௃c=>15-5ூ'Ạ௃TC;ூ
⚪᪆௃%&'¸¹º~LḄ⚣᳛ᓝᑖr¿ÀÁḄ#ᨵ⚣᳛ÀÁḄÂÃÄᨬᜧᵫÅCᳫ᤮3஺ᳫ᤮3ᨬ4r¿ᡠ|ÂÃᨬᜧḄᵫ,;bZL_L=(2ÆஹcஹdÇÈÉÂ~ᐸÂ~⚣᳛Ëkź~LḄ⚣᳛ᡠT0.92|Ì᤮ᳫḄÂ~ᕜkÅ“᤮ᳫḄÂ~ᕜ஺ᑣᨵবᵫ⚪,Ï;ba᤮Ḅᕜ4Lஹ_100z7-^T7=2%ফᵫ,;bᓫ᤮1ᑮÕᨬ?ᡠÖᔊḄ4᪷8ᓫ᤮ᕜ9:ᨵ%Ù(2஻+1)(/2=0,1,2,3,...)ᓫ᤮2ᑮÕᨬ?ᡠÖᔊḄ4t=kT(᝕=0,1,2,3,)22;WÛÜU᤮ᳫU᤮ᳫW᤮ᑮᨬ?ÝᡠÖᔊḄᑣ⌕®10஻+5=9Z,ᐸ0i&Ëà᦮ᦪ஺ᑣik;àâ4ூ
⚪᪆௃%&'ᦇ=10m+5,(m=012,…)[1ேᵫ⚪n;b᦮ÀÁ;|kᦔÓᡂ•ᓫ᤮kᦔ᤮34஻=9/77+4,(7«=0,1,2,—)0A-.Oᐭ;WÛÜU᤮ᳫU᤮ᳫW᤮ᑮᨬ?ÝᡠÖᔊḄফ᪷8ᓫ᤮ᕜ9:=4(1(ä+5)=9m+4.5s,ᐸ0(w=0,1,2,•••)15-8ூ௃ூᫀ௃0.56Â~ᵫÅåbUæḄ3Z4|AP|=4|A0=?2,Uæᜳè4éூ
⚪᪆௃%&'[1]ïᧅñòᡂ•óᐰÂ~ᩈö÷øᡂò᦮Ḅùø᪷8⚪,,èᵫêëᐵÀ;øᡂUò᦮ùøḄ4APAQ=AOPQ0.6úᑣᨵt=——s=3s0.2OA=4—ᦑñXùøḄ4Is,ᓽïᧅḄÂ~ᕜ7MT=1.5s᪷8ᓫ᤮ᕜ9:;iᳫᩭîiè᤮~Ḅᕜ4T=2ᐔT=2TT᤮315-7ூ'Ạ௃ூᫀ௃100'814.5+9/n(/n=0,1,2,■.■)ூ
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120