1zᭆÁC“ÂÃÄᩩÆ”“Âb~ᐵÈ(1)ÂÃÄᩩÆ$b.,ÉÉᱥ#'.ᔲ^ᡈὅµᨬᜧஹᨬBḄÃÄᩩÆ+Ìᑖ᪆ஹᑨ¶⚪ḄᑗᐭkK(2)Âb~ᐵÈ&'b~ᐵÈ[\b~ᐵÈ.ÏÐÑÓiᱥ#Ḅ[\ᐵÈp⚪ḄÔẚ½.4.sᵨᑖ᪆Go(1)ᱥᳮᑖ᪆oᢕדᱥ#.ᔲ&ᑮ¢£'Ø[¤”XᐵÙ+ÚÛÜ⚪+⚪ß|Ḅ◚áᩩÆ+âãᱥ#ᐵÈḄ1..ᔲ^Ḅᑨ¶Go(ÃÄᩩÆo)ᱥ#Bæᱥ#Aèé&+Âᱥ#{+êᑗ=&ஹ·ᑗ¼+ë+ᑣ.^K·XB=XA+XO ᑣាf^K·ᑣJ.^.(2)tìmᦪoí&'Cf,᪷ïᩩÆᑡGñ+ᑮᐵòtὅó'ḄµArP&'fḄtìmᦪᐵÈ+Ac=O&+⊤<ὅ⍗.জ·÷¼(),ᓽᨵÂp+cdz⍗ìKঝ·÷=(),Âp+cdûf^ᡈ⍗Kঞ·¯p+cdJ^ᡈJ.⍗.ê,=-5&+mᦪᨵ@+þ⊤ὅµḄᨬᜧᡈᨬB@.(3)oᙠᙶ᪗ᱥḄ.Ḅ⊤⍗ᑖ᪆ᢕ!Ḅ“☢$”ᐵ'ᐵ.(ᑖX-t)V-t1.,-X-fஹV-f3456375ᡠ9:Ḅ;345Ḅ<=>@XABVA/ḄDᦪᐵFG3ᱥḄHI.2.x~t5Ḅ⊤ᱥ⍗v-f5Ḅ⊤LMᱥḄ!NO⍗.3.Qᙶ᪗x-yᑣV9:755⊤ᱥᙳXYLQZG[⍗\]G^⍝ᐵ.`⚪1.]cd45Ḅv-feᑡghijḄ3()
2A.BCm⊤cnYḄᜧp]34mB.ᙠ18r22sᑁcḄ]24mC.uYvBCmḄwᨬᜧD.uYvEᡠyḄMz{ᨬ|ூ~ᫀAூ᪆5+128cmcḄ]x=-y-x4m=34m,⌱⚗Aijᙠ18r22sᑁcḄ17x219x2]ᐭ==m+ ——m=Om,⌱⚗B┯ᵫ⚪CEm5᳛ḄyᨬᜧᑣCEmyYvḄwᨬᜧ⌱⚗C┯ᵫ⚪ᙠr20sᑁᙳ]iciᔣᙠ20r22sᑁ]cᔣᡠuYvyMz{ᨬ|⌱⚗D┯.⌱ᜩ☢¡¢ᙠ£ញᑷ¢Ḅᑷ¢¦z§¨©ªw.ᡠ]«¬ᕒ«¬®¯¡¢ᙠ°☢£ញᑷ¢Ḅv~t«¬ᕒḄ>]1s.eᑡghijḄ330~☢20i²☢!\X012345//SA.³f=0ᑮµe¡¢ᙠ☢Ḅ¶ᙳᜧ·ᙠ¸²☢Ḅ¶ᙳB.³f=lsᑮµe¡¢ᙠ☢Ḅ¶ᙳᜧ·ᙠ¸²☢Ḅ¶ᙳC.³r=oᑮµe¡¢ᙠ☢Ḅ¹¬¦zºᙠ¸²☢Ḅ¹¬¦z15mD.³/=1sᑮµe¡¢ᙠ☢Ḅw3ᙠ¸²☢ḄwḄ0.75»ூ~ᫀCDூ᪆³f=0ᑮµe¡¢ᙠ☢Ḅ]xi=30xlm+¼½m=90m□3x30¶ᙳ]vi=ym/s=18m/s¡¢ᙠ¸²☢Ḅ]¾=30'1m+Wm=75m¶ᙳ75]ᔾ=Àm/s=18.75m/s,X|-%2=15m,ᦑA┯Cij³=lsᑮµe¡¢ᙠ☢Ḅ¶ᙳÂm/s=15m/s,¡¢ᙠ¸²☢Ḅ¶ᙳ
3W=Ãm/s=15m/s,ᦑB┯;³f=Isᑮµe¡¢ᙠ☢Ḅwᜧps=Åm/s2=7.5m/s2,¡¢ᙠ¸²☢Ḅwᜧp2=Åm/s2=10m/s2,ᑣ³r=lsᑮµe¡¢ᙠ☢Ḅw3ᙠ¸²☢ḄwḄ0.75»ᦑDij.G 63ᙠ¶4ḄÇÈᨵᵬஹ˯¡¢ÌÍḄQ■ᡠᙠ0r6sᑁ᪷ÐÑᑨÓḄ3ËḄᔣ®B.ᵬḄᙠ5sᜧ·ËḄC.ᵬḄÔÕp·ËḄD.ᵬஹ˧ᙠ2r4sÖḄ×M¦ᨬ|ூ~ᫀCூ᪆\Q-Ḅ᳛⊤Ñ^ᵬஹËḄᔣ>ᦑA┯;ᵫ⚪Ñ^ᵬ5Ḅ᳛p·Ë5᳛ḄyᑣᵬḄp·ËḄᦑB┯,Cij;ᵬஹËᙠ2r4sÖᐜ⌲Û☠ÝÞ|z,⊤⍗L◞ᑁGàᙠ¦ᨬ|ḄMᦑD┯(gQQQCIᵨDᦪâãᑖ᪆y·OäåÑᵫæÇçèéuᱥᳮëḄDᦪᐵ,ᩭᑖ᪆Ḅ᳛ஹí¦ஹ☢$Ḅîï.`⚪2.ᱥᵫ☟ñòÔᙠóôḄõ¶☢ᑁ45ᐸw÷tøᓄḄa-tᡠ.ú⌱ᱥòÔḄᔣ]iᔣûüeᑡghijḄ3|h«/ m\-s-2...12\3j4t/s-4---------A.ᙠ0r2sḄᑁᱥᐜdᒴ45ÞdᒴþB.ᙠ2sᱥḄᨬᜧC.ᙠ2r3sḄᑁᱥḄøᓄë]1m/s
4D.ᙠ0r4sḄᑁᱥḄ]ÿூᫀCூ᪆0~1s,ᱥᒴ12sᦪᱥḄA┯2s0,ᨬᜧB┯/"#$"%&'(ᡠ*Ḅ☢,⊤.Ḅᓄ023sḄ1ᑁᓄ03v=x|x(—2)m/s=-1m/s,C4504sᑁᱥḄᓄ00,ᓽᱥᙠ4s89:;0,D┯.=ᑡ?@45ḄA()1() ----------)o4DA.EFḄG20m/sB.ᑷFIJEFḄᜧ2.5m*C.ᑷFIJᢝLḄ18sD.4sᑁᑷF:;60mூᫀAூ᪆ᵫ⚪"OPQ=S2.5f+20(m/s),᪷UᒴV%:;&1ḄᐵXYx—v»t+%[PQ="+_0,`aOPvo=20m/s,a=-5m/s2,ᓽbᑷFEFḄᜧ20m/s,ᑷFIJEFḄᜧ5m/s2,ᦑA45B┯ᑷFIJᢝLḄ1~~=~~~s=4s,ᦑC┯eᑷFIJEFfIḄ:;g=h=*x4mCl—3ZZ=40m,ᦑD┯."ᡠ.AkᱥV%ḄV2-%"#(ᐸ$V,X:nᙶ᪗),=ᑡᐵqᱥrx=0ᜐtx=&ᜐḄIJᑖ᪆ᐸ$45ḄA()RO--------wᱥᒴV%2B.wᱥḄᜧx
5C.{wᱥḄᜧ0:;ᜧ+0D.{wᱥḄ:;ᜧ%ߟ0ᜧூᫀCூ᪆ᵫᒴV%&:;ḄᐵXY/=2OPV2=2«X+V2,ᵫ⚪"Oᱥ0ḄឤᵫqᱥḄᦑᱥᒴV%⌱⚗A┯ᵫv2v 2=2ar+M"#Ḅ᳛q2,ᵫ⚪"OP2a=—ᑣPᱥḄa—xo'ᓣᜧ~,⌱⚗B┯{wᱥᜧ:wOPQ=,ZX()ZX()L44{wᱥ:;ᜧ:r()OPv2=yvo2,ᜧ1%,⌱⚗D┯.⌱⚗C45:"#1Ḅ¡¢ᓄ1.£"#¢ᣚ¥¦⚪Ḅ§¨J:2.⌕°±²ᵨ᪆@®◀@¶ὅ¸ᔠ©ª⌱«⚪"#¥⚪¬Ḅ⚪5᳛®.º⚪3.¼½ᵫ☟9¿ÀV%Ḅv—fᐵX"#"ᡠ.ᑣw¼½Ḅx—fᐵX"#OᜧÄ⊤.⌱⚗"$Ḅ(ூᫀBூ᪆᪷Ux-f"#$"%Ḅ᳛⊤.Ow¼½ḄgÅᐵX"#OᜧÄ⊤.B".τᱥᵫ☟9¿ÀÆV%ᐸÇ1ᓄḄÈÉ"ᡠ..Êᱥ
6¿ÀḄËᔣ4Ëᔣᑣ=ᑡᐵqᱥḄ_/"#45ḄAÍÎூ᪆᪷UÇ1ᓄḄ"#OP01sᑁᒴV%4Ëᔣ⌱⚗D┯Ï1sÐḄv=lm/s,l2sᑁÑÒ4ËᔣÓÔᒴᑮ2sÐ0,⌱⚗B┯23s,4ËᔣG0,ᱥ4ËᔣḄÖV%ᓽrÏ2s¿À×ØÙ☢Ḅ⌱⚗C4GÚ@ÜIJ$Ý_ஹ:;xÇ1rᓄḄ"#"ᡠ.ßwᱥᙠà0áGâᑣ⊤.wᱥÆᓫËᔣḄ"#AÍÎூ᪆⌱⚗AᡠäåḄᙠ02sᑁ:;ᐜçᜧèᱥḄËᔣéêᦋ,ᦑA┯;⌱⚗BᡠäåḄᙠ02sᑁ4ᱥᔣ4Ëᔣᙠ24sᑁÑᱥᔣÑËᔣᱥËᔣéêᦋᦑB┯;⌱⚗CᡠäåḄᙠ01sᑁᱥᒴV%,12sᑁËᔣᦋᜧᱥᔣ4ËᔣᒴV%,2sÐâ,ᱥᙠeᕜîᑁḄËᔣᦑC45;⌱⚗DᡠäåḄᙠ01sᑁᔣ4ËᔣᒴV%/2sᑁËᔣᦋᜧ,ᔣ4ËᔣᒴV%,2sÐâ,23sᑁᔣÑËᔣᒴV%ᱥḄËᔣéêᦋᦑD┯
7ïðñòóôÍ1Îὅñᜧὅóô"#?õ/জÙ÷☢ᱥ&Ù☢ᱥ1øùçᜧᒴñᒴúঝf=/o¶ᱥøᨬüXo+AxÍ⚗Oýt¶ᱥGÀøþÎiVঞf=fo☢ᱥ☢ᱥᒴᒴট⍗0t\,/ᒴᒴA)tᱯ⏨!"#$Ḅᱥ&ᒴ'()*+⌕-.ᑨ0#1ᱥ2ᔲ4567)*.92;<ᜧὅ<ὅ?@ABCDVEF$GHᱥIJKHᱥḄᒴᒴᙠMHᱥ<NGᓽr=roGQ!1I11110A21জ"=SᑣាHᱥ⍗V//Y2Z[\Ḅ]^ᩩ`ᒴᒴঝ"Axao,ᑣfgGHᱥᨬIi0tঞ"ᑣ⍗Hk"GQAr=xoHᱥᒴᒴy-niNm⍗ᑣtGQHᱥmn⍗“2—q=q2Ai1)h7_4)v⚪4.xyzᙠᓝ|}~NMGyza=3m/s2Ḅ8(ᑖ᪆)!yzzḄ<NGᨬkgG5ḄGI7,HzḄIAx,ᑣᨵv=atVᡠ,=7=2s1,,]¤=6m.n(¦)!kyzᙠzK5G/Hzᨬᑣ3§¨ᐭ4ªᦪ¬Ax=6Lgᔆᵫn²ᦪ³¦Ḅᩩ`ª!/=2sGAxᨵᨬᜧ¦6mᡠ/=2sGHzᨬIAr=6m.´(AB)!zµyzḄv-rABAᡠ¹ᵫAº»¼ᙠ⍗½GQHz<NHzᨬgGḄI▢¿´ᓭÁḄ☢Â,vi=6m/sᡠᨵ=^=s=2s,vi/i6x2AA=-m=6m.22IyzAVA=4m/sḄ<ᔣÆ&ᒴ'()*ÇÈÉxo=7mᜐஹv=10m/sḄ<Îᔣ)*ḄyzBÏEFᒴᑷz'ᑮ☟7Óᢝf*ᐸᑷzḄB<ᜧ=2m/s?.×ᑷzEFØG.³:(1)ABAஹBḄᨬ;(2)5GAាÛB.ூᫀপ16m(2)8sூ᪆yzAµ8Ḅ)*ÞAᡠ¹.X"SbX”)ái----►MXgAXmax=().()()‘‘em'_______Y_—Ax——►44(1)MAஹ8Hyz<NGHzḄ
9ᨬᓽV=VB~Clt=V^,âr=3sgGyzAḄãäXA=VAt=y2myz8Ḅãä=1åæç=21mᦑᨬAXmax=+Xo—X4=16IB.(2)yzBEF'ᑮ☟75ᔊḄG½=ì=5s2)*Ḅãäî'=ᡈ=25myzAᙠGᑁ)*ḄãäXA'==20mgGᐭ¥=ô'+J’=12myzA◤÷)*ḄG2==3SᦑABᡠᵨGù=½+ᦇ=8s.yzᙠ'(û}ü54km/hḄ<ᒴÿᯠᙠᐸ14mᜐᨵ5m/sḄᔣᒴ.0.4sḄ"#$%&'()*+ᑷ'ᑣ.(1)123456'7Ḅ8ᜧ:;<1=<>(2)@7ᑷ$Ḅ8ᜧ:Aᨵ4m/s2,ᙠ7*+ᑷḄ$*+CḄ8ᒴ8'ᑣḄ8;<1=ᜧDEFGHI56>ூKᫀ(1)5m/s.(2)1m/s2ூN᪆(1)P7Ḅ8ᜧ:1'Rv7=54km/h=15m/s,R+WX"=14mᙠ"#$%0.4s&'7Z5Wd=d(v7v=10m\7ᑷ*+]$'Ḅ^_1.x»=vnt7Ḅ^_1.xit=vᎷP7Eab'c$ᨵ.xi\=xsi+d'gᐭᦪjᳮm.^-10/4-10=0
10⌕FGI56'ᓽcr;=AᨵsN,ᑣ.A=102-20a<0,Nm.a>5m/s2.7Ḅ8ᜧ:;<15m/s2.(2)P81ᳮtm.xx'=xti'+d'xi>'=var+y/2ᳮm.(J"+2)u-10r+10=0⌕FGI56'ᓽcr;=AᨵsN,ᑣ.v'nio2—20”—804)Nm:ci'>\m/s2.Ḅ8ᜧ:;<11m/s2.@yডG{|}ᙠa~5⍗⚪Ḅ#ᵨ1.X-f{|ஹV—f{|Ḅa~5⍗⚪.(1)ᑭᵨ{|᳛ஹ☢ஹḄCឋᑖ᪆ᡈC].(2)ᨵ${|ᡂᱥḄ▭¡¢ᳮN.2.ᑭᵨv-t{|ᑖ᪆a~5⍗⚪.ᙠᨵ£a~5⍗¤t᪷jHsᱥḄ¦¨©ªr{|'«¬{|ᑖ᪆]m©®'¯᪵±²ஹ³ᣩ.3.@1x-f{|'µ¶Ḅ¶'{|5ᓽg⊤Hᱥ5⍗¸@1/{|'t¹ᓄ1v-t{|ᑖ᪆.»⚪5.ᵬஹ½H¾ᐹᙠÀ±Á☢b'ÂὅḄ^_$%{|{ᡠÆ'ᐸ½Ḅ^_$%{ÇÈᐵ¢xÊËÌḄÍᱥÇḄÎᑖ'ᑣÏᑡÑ}ÒḄÈ()A.ᵬᐜÔᒴÕ±Ç&Ôᒴ±ÇB.½CÔR1ÖḄᒴ8±ÇC.ᵬᙠ0×10sᑁḄÀᙳ1-1.5m/sD.ᙠ0×10sᑁᵬஹ½H5⍗HÚ'Û5⍗$tE5ÜூKᫀBூN᪆ᵬᐜÔᒴ&☟ÞI'⌱⚗A┯⸽Ḅx-r{|1ᐵ¢xÊËÌḄÍᱥÇ
11ḄÎᑖ'ᵫcm^_rx=,tä½ÔR1ÖḄᒴ8±Ç'⌱⚗BÒ¸ᵬᙠ1()sᑁḄÀᙳv=/=-0.6m/s,⌱⚗C┯â¸\{|tä{Ç5HÚ'ᑣH5⍗HÚ'{ÇḄ᳛⊤Æ'täHÚ5⍗$ᵬஹ½åI'⌱⚗D┯â.Gæ@a/k=⌱)ᵬஹ½HᙠÀ±çÁbᔣ'ᐸè'{|{ᡠÆ.éäHᙠf=3s$ê'ì")ᙠf=lS$'ᵬᙠ½&B.ᙠr=0$'ᵬᙠ½7.5mC.HíÚêḄ$îÈt=2D.ᵬஹ½HÚêḄ^ïð%ñçÁᔣḄWX140mூKᫀBDூN᪆᪷jv-r{|ä'ᵬஹ½Håñᔣ.f=3s$'ᵬஹ½Hê'c$vᵬ=30m/s,vc=25m/s,ᵫu—r{ÇZ$%Êᡠò“☢”Ë#^_ä'0×3sᑁᵬ^_xᵬ=Jx3x30m=45m,½^_xt.=¸x3x(10+25)m=52.5m.ᦑf=()$'ᵬஹ½H5WAri=xᓃ-xᓫ=7.5m,ᓽᵬᙠ½7.5m,⌱⚗BÒ¸0×1sᑁ'xᵬ'=¢ø1ù10m=5m,xc,=yxlx(10+15)m=12.5m,Ax2=x1x,'=7.5m=Axi,Ñúᙠf=ls$ᵬஹ½HûÚê'⌱⚗AஹC┯â¸ᵬஹ½HHÚêḄ^ïð%ḄWX1ü=xᓫx#=45m—5m=40m,⌱⚗DÒ.ᎷPýçÁbᵬஹ½Hᙠ⍝bᔣ.ᵬᙠ'½ᙠ&,ᙳ1W=30m/s.ᵬஹ½5Wÿ=100m,=0ᵬ⍗ញᵬஹḄᓄᑖᵬஹᡠ.!"ᔣ$%"ᔣ.&ᑡ()%*Ḅ+()/(ms?)a/(ms-2)5503()1τ399r/s-5-1()ᵬA.r=3s=>ᨬ@B.f=6sA=B
12C.f=6s>Cᨬ@Dᨬ@>C$10mD.ᙠ0F9sᑁH=IூKᫀCூN᪆ᵫ⚪RSTUḄp-fSᡠᵫSVWf=6sBX>Cᨬ@Y▢[\ᑖ☢^$0F6sᑁ_`abᓽAr=xᓃ-x=[9X30X3+9X30X(6-3)]m=90mCᨬ@ᨬ@>C$xo—Ar=10m,ᦑAஹB┯gC%*9f=6s=>10m,Dᵬᙠhஹᙠᙠ6F9sᑁᵬᜧj>Ckᩭkᜧᦑᙠ0F9sᑁᵬmnᙠhAH=IᦑD┯g.0361.(o⌱)ᵬஹqr=stuvwᱥ✂{q|ᔜ~YUqmn=ᔣ,m{HᔠḄ!ᘤᑖᙠᑁḄᜧḄᓄᐵᡠᐸYᵬḄᜧᓄḄ$ᑖamᙊᑣ()VLA.ᙠᵬஹ{=qB.0Fᑁᡠ¡¢£ᜧjᵬC.ᙠ“ᵬஹ{ᜧ=BD.0~f4ᑁᵬஹ{¥ᙳ᳛=qூKᫀBCDூN᪆¨ὅ=ᔣᙠ/!ὅBᜧ«ᔣ$¬ᦑ⌱⚗A┯g;⚪Y°±ᡠᒹ³Ḅ☢^⊤¢£ᦑ⌱⚗B%*;0Fµᑁᵬஹ¢£=B¥ᙳ᳛=B⌱⚗D%*;ᙠv-tSY¶᳛Ḅ·¸¹⊤ḄᜧºᦪrW¼VW,½ᵬஹ¶᳛=BᦑC%*2.ᵬஹᱥ¾|qmᙢÀÁÂqm"ᔣÃn!ᵬḄX"ÄḄv-tSᡠ&ᑡ()Y%*Ḅ+()
13A.0-2sᑁᵬஹᱥ¾aḄ>CᐜÇᜧÅB.È3sᑁᵬஹᱥ¾"ᔣ=qC.2-4sᑁᵬஹḄ_`ᜧÉ$8mD.0A6sᑁᵬஹᱥ¾>UÀḄᨬᜧ>Cᙳ$4mூKᫀAூN᪆᪷ºXYSḄ¶᳛⊤W0A2sᑁᵬᱥ¾%ᔣÃ$2m/sḄᒴn!%ᔣÃÌ$0Ḅᒴn!ᵬḄᐜᜧjḄjḄᑣWᵬஹᱥ¾aḄ>CᐜÇᜧÅᦑA%*᪷ºᱏ/SḄ¶᳛⊤WÈ3sᑁᵬḄ$Îᵫv-tSWÈ3sᑁᱥ¾$%ᑣÈ3sᑁᵬஹᱥ¾"ᔣ=«ᦑB┯g2A4sᑁᵬḄ_`ᜧ$Ax=4m- -4m=8m,Ḅ_`ᜧ$ÏᦑC┯g6sÐᵬḄ_`$0,ᵬᱥ¾>UÀḄᨬᜧ>C+4m,᪷ºv-tS°±ᡠ³Ḅ“☢^”⊤_`W/=3s,ᱥ¾>UÀḄ>Cᨬᜧ$Òm=6m,ᦑD┯gᦑ⌱A3.mᱥ¾Ãn!ᐸᓄḄa-tSᡠ&ᑡÓSYVÔ%*ÕÖXᱥ¾!Ḅ+×ØூKᫀDூN᪆ᵫ“YSVWᙠ0ஹᑁᱥ¾Ãᒴn!,MS+Ú¶Ḅn;ᙠ9ATᑁ$0,ᱥ¾Ãᒴn!ÛS+¥jt±Ḅn;ᙠ7A27ᑁ«ᔣᱥ¾ÃᒴÅn!°$ÏᵫSVW,D%*,AஹBஹC┯g;ᦑ⌱D«4. o⌱ØmÜᱥ¾n!|/=0ÁÂ,ᱥ¾Ḅ//SᡠᙠÝஹÞᙶ᪗±
14Ḅá>ᑖ$0.5m/sÄ-1s,ᵫXVW×Ø,s-1Ø0.5“/t/s/----------"A.ᱥ¾Ãᒴn!Ḅᜧ$1m/s2B.ᱥ¾Ãᒴn!C.ᱥ¾ḄÌᜧ$0.5m/sD.ᱥ¾ḄÌᜧ$1m/sூKᫀABCூN᪆ᵫ⚪Vçè°tḄᐵé$ê×03+0.5Øm/s,ᵫᒴn!Ḅ_`-ìéEM+ïçð=vo+ظóVçÌ$vo=O.5m/s,1=0.5m/s2,ᑣᱥ¾Ḅ$a=lm/s2,VWᱥ¾Ãᒴn!ᦑAஹBஹC%*,D┯gᦑ⌱AஹBஹCo5.×o⌱Ø“ஹhõÀᙠqmn!Ḅ_`-SᡠõÀḄᜧÂö$0.1m/s1=ᑗjᙶ᪗$×5S,-2.7mØḄÀᑣ×ØúA-2.7ûZbA.aÃn!Ãþ!B.f=5s,“ஹ6Ḅᙳ-0.54m/sCḄ-1.1m/sD.xo!1.55mூ#ᫀCDூ&᪆ᵫ⚪*+,ஹbᙳ-./012ᦑA┯6;/8ᑗ:ᙶ᪗=5s,-2.7m@Ḅ2ᦑᙠk5sC8DEFG᳛8D2ᓽJKm/s=-0.6m/s,ᦑB┯6;ᵫ⚪*+2-ᒴN./01ḄOᜧQ0.1m/s2,᪷S01TUVᨵv=.@+,&[m/s,ᦑC\];^:b2_5sᑁ2ᨵ:ᡝcU⁚fX5m=4.25m,ᦑbhiḄjklᙶ᪗mḄnlxo=LH-2.7m=1.55m,ᦑD\]ᦑ⌱CஹD6.=r⌱@stuvwETCz{|ᐭ~,O|ᐭz⍝ḄᡂᒴO./01,ᐸᙳtᓄᐵᡠ+nl1kmjo|ᐭz⍝ḄC2☢\]Ḅ=@
15B.UOsḄ8m/sC.O-20sᑁḄj160mDglOOsூ#ᫀBCூ&᪆ᵫ⚪*+0ᑁḄᙳ15m/s,ᡠ¡¢=£=¤s=-s,D┯6;ᵫ¥ὶ§+vo=5m/s,a=0.3m/s2,A┯6;r=10sḄv=vo+«?=(5+0.3x10)m/s=8m/s,B\];ᵫjUVᡝ¨\+1^©ªx20+|x0.3X202^m=160m,C\]7.ᙠូᜩ2®¯°±2ᵬஹ³uvᙠsᩩ.Ḅᓫ¶⍝·2ᵬᙠ_ஹ³ᙠ¸¹ᔣ¶».¼Cv½¾¿ᑮ_¥ᨵÁᦑiÂḄÃÄÅ2¹~ᑷv2vᑷv¸ḄÇsf§ᡠ2ᑡ\]Ḅ()*o244()48//SA.ᵬvḄOᜧ:³vḄOB.Ìf=24svÍiÂÎÏ2ᑣÑv8nᨬÓC.ÔÕviÂÎÏ2~ᑷvvḄnÖ48mD.ÌviÂÎÏ2ᑣ®ᙠ~ᑷv24s¡¸Ḅ¼CiÂḄூ#ᫀCூ&᪆ᵬvḄOᜧQ0==!|m/s2=1m/s2³vḄOᜧQ42=||=Øm/s2=1m/s2ᡠ¡ᵬvḄOQ:³vḄO2ᦑA┯6Ùr=24s2v8D2~2ᵬᙠ_ஹ³ᙠ¸¹ᔣ¶»2ᡠ¡Ìf=24svÍiÂÎÏ2ᑣÑv8nᨬÚ2ᦑB┯6Ù16~1-80~24sᑁ2ᵬvḄj=-^—x24m=288ma—20+8³vḄjxz=12-x24m=336m
16ὅjÞßAJT=X2—M=48mᡠ¡ÔÕviÂÎÏ2~ᑷvvḄnÖ48m,ᦑC\]£/=24s2v8D2Ìv8Dãᨵ8Ï2ᑣ8D¸2ᵬvḄä³vḄᜧ2vå®8Ï2ᦑD┯6.8.æç“èé”Ḅhëìírᙢïð2ñòzU·Ḅ½¾ó¡ô_¥⍝2õö÷ø⍝ùúûᐰ.¼zU¹s./v⍝·¹ᔣᒴ¶»Ḅývþÿ ᐸᜧᑖ=40m/sஹ=25m/s, ᙠ Ḅ=22m!"#ᨵ % &ᓽᑷ )*ᐸ+,- ⌕/0x=160m456ᩭ.9 ᙳ;<=>.) ᑷ ?@ᒴBCDᶍFGHI0JKᑖ᪆9 MᔲOPQ.ூSᫀVW᪆ூW᪆X1:Z[X\ ᑷ 0]ᨵ=W^ ᑷ 0]Ḅ_ᜧ|=5m/s2bc deᑷ /0H”9 Pgᨵv\~a\to=V2,W^/o=3s%jHᑁ BCḄXi=vin)—W^xi=97.5m BCḄX2=V2/O,W^X2=75mvX]—.X2—22.5m>xo—22m,ᦑ9 OPQ.X2:xᦪXᎷb9 ᙠf|PQᵫWX1~9 PQx/=X2+xoᓽ"”|=V2t+Xoᳮ^,15r+22=0MᐵHfḄᐗ#]A=(—15)2—4x|x22=5>0,#]ᨵᦪWᓽ9 OPQ.X3X9 Ḅv-r▢,☢¡Ax⊤£9 PgḄ¤¥¦ᵫ;~AJC=1X3X15m=22.5m>22m,9 OPQ.
1740Km.L)25—— 0ߟ38^s9.®¯°Ḅ± 5ᙠ²³´µ±ᕒ!c+·´@10m/sḄᒴBCḄ ¸¹º»¼½"¾¿À/05.5sÁ± ÂᩭÃ@2.5m*Ḅ_Åᒴ_Ʊ ḄBCÇÈÉᑴᙠ90km/h@ᑁ.Í(1)± ᙠ¿À Ḅ0]9 HḄᨬᜧ(2)± Á⌕ÏÐH4¿Ñ .ூSᫀপ75m(2)12sூW᪆(1)µ9 PgÓÔḄᨬᜧb± Á/0“H9 ḄPg..vi10ᑣn:tl=a=l5s=4sx×=Ø(ẓ+Ú)=10x(5.5+4)m=95m11ஹ0ᜧ±=5M~=/x2.5x4-m=20mᡠ@9 HḄᨬᜧAA=XÞ-xß=75m(2)± àᑮᨬᜧu=90km/h=25m/sᡠᵨḄH/2=-=10sa%9 Ḅ¤¥ᑖv2252xk=ä=£5ni=125inr,'=0("+ç2)=10x(5.5+10)m=155m9 AA'=X,'-x*'=30m± àᑮᨬᜧÁÅᒴbè/0H¿Ñ AxᑣAf=----=2sV—VIᡠ@± Á⌕/0/=ᓃ+"=12s,4¿Ñ .10.êÐëḄì⍝Ñ®FIì "#200mᜐᨵñᐰ ó@10m/sḄᒴ"ô,ì c☟ö@2m/s2Ḅ_¿À.(1)Íì 3s÷Ḅøᜧ(2)Íì ù¿Ññᐰ ú¿Ñû"ñᐰ Ḅᨬü(3)µì ý¿Ññᐰ ì þ&ᓽᑷ ÿ 4m/s2Ḅᒴᑣ⍗"($ %&'ᐰ)*+,)ூ/ᫀ(l)6m/s(2)20s225m(3)20s
18ூ8᪆(1) 3s;Ḅ<=441=2x3m/s=6m/s.ফ$ABC'ᐰᵫEFᐵHI,1°vo/2+200m=^1/28IA=20sP Ḅu=a2=2x20m/s=40m/sTUVᨬXᵫY=IUḄ,3=Z=[S=5SᨬXVAs=W3+2OOm—%Ḅ2=(10x5+200-1x2x52)m=225m.(3)Ꮇ$⍗(dᙠ)ᵫEFᐵHI=Vo/48If4=15s hiᩭḄ/'='=*S=10Sᡠ/4=15S+ᔠo▭⍗ qhr.2$4⍗stu8I4=20S.