2021年江苏省扬州市宝应县中考物理一模试卷（附答案详解）

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2021
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27(1)᪷[u=:^_ᙠ50sᑁḄᙳ;(2)᪷[G=mg^_Ḅ()?᪷[W=G/i$P=ᔠ^_ᙠ30sᑁ3Ḅ4$4᳛;(3)᪷[⊝)ᑖ᪆P஺e⚪ὃhSᙳஹ()ஹ4ஹ4᳛Ḅj^kl⊝)ḄmᵨM>o?Ep⍝rᔠ⚪?stGᜧ஺26.ூPᫀ௃ᵫ⊤xᦪ[>RiᵯD|}N/?2ᵯD|?᪷[P=ீ>?ᔠᐵ5ஹS2AᵯD/?2$ᵯὶ?Eᢱ?ᔠᐵSஹSiAᵯD&$ᵯὶ?Eᢱ?ᐵᙳᔠA?%ஹ%klᵯὶ?Eᢱ#(1)☊ᙠᢱᨨAḄᵯ4᳛XP=P-=ᗌ+50஻=1018஻#(2)☊ᙠᢱᨨḄ'4᳛Xp=p+p+p=—+—+Pᵫ=¡¢+££+50஻=2954஻=12ᵯRRᵯ25஺50஺122.954/clV,☊ᙠᢱᨨ2/7§ὑḄᵯ©XW=P^t=2.954/cWx2h=5.908/cW•h.(3)᪷[«¬p=/KLḄ®¯Xm=஺ᡝL^=1.2kg/m3x20m3=24kg,±XQᔾ=Q,᪷[Qᦈ=cmµtKLᓣḄXt=Q"'=4.8X10S/=2o࠷AcKL?nl.OxlO3J/(kg°C)x24kg"P(1)☊ᙠᢱᨨAḄᵯ4᳛X1018W#(2)☊ᙠᢱᨨ2஻§ὑḄᵯ©X5.908kW-h-,(3)ºVAWᑁ☊»_4.8X1஺5/Ḅ½¯¾¿ÀX203ÁᑁḄKLᐰÃᔾᦈ?ᑣnlÄÅᓣ20஺Æூ>oÆ௃ᯖὡÉÊḄj^ஹᵯ4Ḅj^ஹᵯ4᳛Ḅj^ூ᪆௃ᵫ⊤xᦪ[>%ᵯD|}N/?2ᵯD|?᪷[P=Ë>?ᔠᐵSஹ52ARᵯD/?2$ᵯὶ?Eᢱ?ᔠᐵSஹS1AᵯDÌ$ᵯὶ?Eᢱ?@28⚓?ᐳ35⚓

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29(5)᪷9@☢AᡂᱯtᜧḄCᱥᐵ>A☢hiḄr`⚪஺⚪¡¢@☢AᡂᱯḄ)£¤@☢AᡂḄᱯ¥¡¢¦§¨©⚪Ḅᐵª஺28.ூrᫀ௃>A®0.80.12>0.6ூ,¯௃d®°±ூ᪆௃t(1)ᵫ⚪,²ᐰb°±Ḅ´nᓃ=2.6s,²·¸¹ºb°±Ḅ´nt=1.8s,2»ᐰbºb
S,ᑣ²°±ᐰbḄ@ᙳ®1%=/=Z.OS²ᙠ·¸bḄ@ᙳ®1%=W=À==Á<Ázt2t22X1.8S3.6S2.6s2ᵫÃ>,²ᙠ·¸bḄ@ᙳ®1>ᐰbḄ@ᙳ®1(2)ÅƲᙠ᦮°±abcp¸¹Ḅ@ᙳ®1ȲAᜐ☟ËÌÍᙠBᜐÎÏдᙠCᜐÑËдt(3)ᒴ®°±Ḅu-t+ᩩᔣ#ÔÕḄᵫ+,²ᙠÕ☢#Ö×´®°±Ḅ²ᑮᚁY´Ḅ´n2.5s,hḄ®1
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r,ᵫ+,²AḄ®1C´nᡂ}}ÜÝᦪ#=Þ=0.2,ᑣ²AḄ®1:%=0.23ᵫ⚪Ùà²AᙠD⍗´°±Ḅ67t=|vt=ix0.2txt=0.1t2----------জ4²Báᒴ®°±ᑣ²8ᙠD⍗´°±Ḅ67tSB=%t=It--------ঝᵫ⚪,ᙠ²AÎÏ°±ḄE´ᙠAp¦0.96ᜐÌEᔣᒴ®°±Ḅ²8,᝞+ᡠãt/0B/0A1⍗ᜐs=0.9mᑣD⍗´äå“+s=SBIᓽtO.lt2+0.9=t---------ঞ,ç30⚓ᐳ35⚓

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᝞'ᑣ/´nᑁ²B°±Ḅ67tSB=v't-……টBាõD⍗´◤äå"+S=S,Bজটýᐭ#ëàt0.1t2+0.9=v't------ঠB⌕⍗ᑣঠ(ᐵrḄᐗ!)ᵫᦪ%&'&A=b2-4ac<0,ᓽ(᝞'A-4x0.1x0.9c0,1&'<0.6m/s,ᦑ89BḄ:;ᜧ9=>90.6m/s⍗஺ᦑ@ᫀBC(1)9;(2)4(3)F:G0.8G(4)0.1G2G90.6஺(1)ᵫ⚪J&9ᙠᐰMNOḄP᪷RSTὅḄVᙳ:;ᐵXG(2)YZ9ᙠ᦮\]^_`aObḄVᙳ:;cdef9gAᜐ☟jklmᙠ8ᜐnopᙠCᜐrjpG(3)ᒴ:tu]^Ḅ"-twxyᩩV{P|ḄtuᒴF:tu]^Ḅv-twxyᩩᔣḄtu:tu]^Ḅu-twxyᩩᔣḄtuᯠa᪷Rwx9ᑮᚁḄ:;G(4)᪷Rwx9A]^Ḅᯠa᪷RVᙳ:;9Aᙠ0-lsᑁḄVᙳ:;G᪷Rwx9A]^ḄF:;᪷RḄᐵX⍗P1⍗!ᦪG8:;mᑭᵨᐵXḄ:;ᑨ⍗98Ḅ:;ᜧ9஺⚪ὃVᙳ:;ḄYZ¡¢ᑮVᙳ:;ḄdᵨMḄ£J¤⚗gwx`¦§ᨵᵨḄ©ªyᐵ«ᢕḄᐵXᮣ¯]ᵨᐵᓽ°±⚪ᨵ²³;஺஺29.ூ@ᫀ௃1.2ᱥ·᣸nḄ¹··º»¼ᜧ9½¹·¾;ᨵᐵজঝঠডdabcG[—=G3—G4ூ&'Ã௃CÄÅ»¼Ḅᜧ9½ÆÇÈÉᨵᐵூ᪆௃C(1)ᵫজMঢ&ÌᙽÎÏᙠÐ`ÑᑮḄ»¼Ò»Ð=G-F=9N-7.8N=1.2/V,(2)ᵫwঞটᱥ·ᙠÐ`ḄÙ;ÚᜧÛÜY¼pḄÝᦪÚ9᪷R?»=6-ßᱥ

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