第6章 机械能守恒定律-2021高考物理艺术生文化课考前100天

!#" !!! ! $! "!- ! N O % ! � ¢ � Ç ö ? R P Ç ! a F " ¢ = 0 " 0 # @ # /0 " ( . # * # @ " ! ¨� 0 # / ( . # @ # @ " =* # ! E� - 23 ! $!#!- ! NO % Àxw@9-u·x+,-s*.fQ ! E� . ?@ # Àx-RPÇ12o|-�¢�Ç ! [bRPÇ/0¶ fQ ! E� 0 ?@ # �� 0 " & # @ " /0 # & # @ # ! � @ " @ # / 0 # 0 " / " + ! E � - 23 # �� "/ & @ ! � " " " # / @ " @ # / " + ! E� , ?@ ! " ,PQR # S?TU $ "!. ! NO % !x©_]qr�Ç7�{��¢�Ç ! · 0 , / =80 D # % , / , / 8¨ 8Õ DÕ D " # ¨ # ! , //1!( , ! ØÁ&�*±ÉsH* ./01 '/ " 1 # 1 ! !0142OÙ% 7!0 , //0' ! 7/0 , /2 0 " 1 # 1 /0 1!( , 2 " 1 # " # 1 ! E� . 23 ! #!- ! NO % �xrª­1 D ! è�&5 8/ ( $ . ' D $ # o�xr _]{7ó)y)'�+,-wx[Ã�¢�Çö?RPÇ ! ¢ = 80 D # /0 ) ( . * # ) D ! ¤¥¨� */ $ . =�� ' ! < - E�23 ! . $ , $ 0 E�?@ ! !�# ! ��F���Z !"0 ! �v�� " 5678 # 9:;< $ " 1=9< $ ! ! "! P ! '1 #!7<<=& $! " " # '1 ! " # # êP $! Eë ! ¿ìë ! Fë & ! "! ;< #! " " # }íëî ! " # # 7"<=& $! }íëî ! 53ëî $! Eïð  (! ÂÃð  ! ñ� " >?9@ $ "! ' " ( '! eÇ-dRP:;dRrsz�s ! è(ç1K ! ' # ( " ! Çaqr(Khç ! _`qraÂ�Ç(ç ! ·Ç�O ÆÃqr-+, ! ' $ ( '! ýnÇïgýnÇýnoBQqr¦ ! §½(2çxh ç-$Ií�¢ ! ' ( ( " ! ÇP*.dR|-rsMÄs $ ÅsèM�s ! NOK ÇaqrM(2ç $ hçèMB(ç ! ' ) ( '! m=>Çï�,=>Ç�$I(hç ! ¶$I(2ç ! è$IB(ç ! ' * ( " ! ! A/7" $% 7/ A " ! <Ö,ÐçD�Os ! Æ�ÇP +,*.zgG ! ' + ( " ! ! 7/ A " % ! �0*.$b�6=/-Æ�Ç ! #!0 !! $!, !! (!0 " ABCD # EFGH $ " ?IJKLM $ "!"!. ! NO % o4 "& 9 ! ��-:;1 % " / " # '"'"%/ 1!)% ! Ç 7 (-ç1 G " /7 " % " /"'1!)H/1!)H # 4 #& 9 ! ��-:;1 % # / " # '"'"%/1!)% ! Ç 7 (-ç1 G # / 7 # % # /$'1!)H/"!)H # 4 $& 9 ! ��-:;1 % $ /"' "%/"% ! Ç 7 (-ç1 G $ /7 $ % $ /#'"H/#H ! [b G " $ G # $ G $ ! <E .! "!#!- ! NO % q�P!=]|-=>Ç1 7 1 / " 0 , /"8! J aq�ÊH!=Rþ-µÇ 7 ! ! 7!% TUP % Z[\]^ _`ç$% 7 (ç G /$!)H ! aÂ=>Ç(ç G 1 /7 1 %/ 1!(H! !�q�+,f %/1!(% ºs ! *.1 1 ! !çIvw $% ! G!G 7 /6 A ! Ás\]-\íîI1 6 A /$!"H ! E� - 23 ! #!"!- ! NO % ��ç-OÇ ! uë!=NÇ 7 (-çf{ ! · G " /G # # 4�ëMo»�!=]¦ ! 42ëMoÈÉ!=] ¦ ! 42ëÃ6=>Çýn ! QÊ/0-Ç 7 ! 4�ë-H*. =/ ! ! %/ " # '# # $% ! ßqróÇ-dRÖ@fQ-:; ! 4�ëéÞ-s|=Û ! ��çD-OÇ ! $%4�ë-çD =/ ! · A " # A # ! E� - 23 ! #!#!0 ! NO % ��+,-H*./0 '/ ! " ! #