1.2运动的描述-八年级上册初二物理【教材解读】（人教版）

!""!?@(AB +,-.!CD?@ ¡¢£¤ ���:�¡!p*¿�Fä%¶�JKLÖ3%JKLÚÖ$ ! £¤¥¦#Mʧ¥Í§%:7ÍN*îKL¦l>^îOÚÖ%Ë 7*ùPLüQPLRS�T3%[\��¿KLPÖ3$^ab oY%�kPÖþL��PÖ$ [\§¨ ¨U ^aboY%)aV$VWTG*@±[\��PÖ �Xº ¢3��PÖ%PÖY+rk+Z%9.@PÖ&p[PÖq%\ ��PÖN¦k��X&�ô#&�!"*PÖ+Z vw vwaVNóÁ��PÖ%3]Ø��aV���Q(aVN ó+$V*K@ !/!":�]ïY?(���PÖ*N !!!" -.¦^_d`ÆÏ!!!!!!!0.labc 1.Wdde!!!!!!!!!!2.Ïfgh 01#ST��*ýþ�T")���r��"�V8¢X�*,m -þ�î��"�¢ef��$&���"O�*&9ï�"-Oef ��$����"Oa��-þ`x�üX��"V8¢X�*,m -þ�î��"�¢ef��$����"Oa��V8¢ ¡*, m-þ�î��"�¢ef��!KL0! 23#0 +,-2!EFG!!1-33-" ©ª#ø\vwaVPÖüij%��4ú³¦aV\LCè%�� \LCè*aV[Oka$ iU«0¬­� l¨º Oka¦m½4¨%[\£l¨´aVNij* noº Oka*4p��Nno*%q��NPÖ*aV%R��Ni j*aV%̧ ?Ú4p½rsaVtu\LOka ®¯p+°±²% F�,m*��TUF�V8 ¢£�V8�,*¤�!�`" ¥J-£¦ç"OV8¢£¤ �$¥JQ¦ç��u�æ*§ ü"OV8�,¤�!á¨aZ Þ©�ª# *ßç��+-Oef��! ** *\«¬­Ý®¯"K°±�² ¯³!+K�°²¯"O¬J�´ µA�"¶�´µÑJ·HF �!Z'¸'Åá¹*�÷# dºÙ»*¼}�-Þ©";º J·HF"»¶-O½¾*! ���½¾OV8*! ×Ø ?v ¦º Oka*4p?v¦%íîS¦aV*PÖwx%��4p?S* Oka%&4'3?S*Oka%QPÖwx*rs�ÚN?S* 7ìº Oka4úT%�Úy_½íî�ï*PÖwxô#&Nz&{¶ rs$r&ðñ:%L3íî7ì%úÊ|����Ê|ij*a V\LOka%ÉT��?¶�Oka'9k4ú3Q(aV\L Oka%°¦¨�¶�Å4¨*Oka'S¦áÜY%íî�ïL r�T%�4úS¦�Oka !/""!WXYZ"9§Å2L¦}FPãY*t Ö~�$³¦���^Ëã*tÖ~�Ë$� [\�´��(ij)T%Å4*OkaN !!!" -.��"u!!!!0.~� 1.)�Ê|!!!!!!2.W��~�:ã*A� 01#�567*O·HF*LY!�5zó �¿À*½¾+"aÞ¿ÀV8¢·HF¯a, m¸'�î¤�"?ü8L"Á)�$ºó!¾:`x% L" �# �$ - : ·HF-)LYÂÃÄ*F�4Å 0 " ´�ÆÇ`*¿ÀV8¢ÆÇ*,m¸'��"¡;¿ÀV 8ÆÇO½¾* 1 : 2 : ÈA`«*´�ÆÇ`*¿À"V8¢ÆÉX�)ÊVWÆÇ x«*ËÀ*,m�î���"¡;V8¢ÆÉX�)ÊVW ÆÇx«*ËÀO��* 23#0 +,-4!GH(?@%IJKLM(!!1-33-"! §¨c³´#µt¶ !!"¦�aV���Oka*$VÚ+!pK@[\ij$t �Y Ã�ij*aVNÚ+*%¦�(PÖ)�(ij)RN���Oka\ �*%Å�PÖN��PÖ%ijN��ij$ !#"S¦aV��?S*Oka%QPÖüij*ðñ?¦¨�S$ �9%�Y*¡��ð���¡�T%�¡��LOka%���Ni j*'\�Ê|LOka%����NPÖ*$9§Å2$ !* §¨c³´#µt¶#·¸¹ª PÖN Ã�* ¦�aVR^PÖ%Ã�ij*aVN?X^* ijN ��* [\eTÅ�*(ij)N¶aV���Å4*Oka* $VÚ+!p@±%����ij*aVPÖ*��ü 7`R�S �PÖwx* rsN��* íîS¦aV*PÖwx%9k4p?S*Oka%¤� *jþ�Ú?S !/#"!®X�9YZ"�9����Í��è���¥¡%�)Ê7ì 3��X�`*rã$¦K�Lt^è��Ë`�ã�%° !!!" -.�´�LLOka%��NPÖ* 0.�è��LOka%́ �LNij* 1.��ËÍ�LOka%́ ��`XPÖ 2.�´��LOka%�ËÍ�NPÖ* 01# 23#2 §¨#ºt¶cµt¶ &!'ÌÍE*)ÎF�ÏA� �"̧ 'Ð8-�*F�"áO ��*Ð8Ñ$ &#'8ÒÓ��*ÔÕ"Ö×O V8¢Ø)}·HFRÙ*"£ Ú·HF¨�ÔÕ��"áO�