FWSZ  x l  D  
 C    ?  - caption1 释放 caption2 复位 caption3 同步卫星 caption4 自由穿越地球 caption5 “静止”于高竿 caption6 图示速度 caption7 图示引力 caption8 圆周轨道卫星 caption9 时间: caption10 速度: caption11 动能: caption12 引力势能: caption13 空间比例尺: caption14 时间比例尺: caption15 更高精确度 caption18 参考系 _root coordinate ccoordinate1 _alpha ccoordinate2 coordinate1 coordinate2 planet1 w captione captionc caption17   captionc          	 
             !N "N #d   O   !N $N #d   O   !N %N #        O   !N &N #        O captione   |    !N "N #        O   !N $N #        O   !N %N #d   O   !N &N #d   O   ' O   (@<0O FSCommand:showmenu false  FSCommand:fullscreen true          )=         *= +,      TA󓴴14  B|C}-D4  B|C~eD4    _3 [mm		N:N N $sPը&!<b	mcٺ洽'#@A4u>^	T~t 	        @         mP}
   ̙ gUGP<| 	        @    9   ]b   ̙ buvKLeœCM>Yy)
ZmXsM6T9)Q4Z)FL$M71hTVBtT@FO1oD/ݬG!$\h]!6F~<ߕ&=w=~IE՝=6ˆ:rcf'1ZSSVܸ:p#OH5kKT15S#+U_s`]UJ^,U:)1Rji=J+ZW:}BΓiq99P`ʐOG:35pc]eZ%t.jSBI&׮\vG	nb/A=~sk*ܵn|Xڰ8W;۪;v[c|u҉9VVi7um&=qWi}!2K: R64/
ӲW?[~W=+"fVM"%365hEfy~Vº~O}ox2ٖh[{l{n&存tqMɗ;:v]̬;Ti3ʴuJC:ΐA=p$)	S0~NjkE:)H짥t~	Wx4IciRS&xs_;Y9sHzR/)6I~tAbreEsoߙČ@ӖKjjmëu\9[2Z9iYň3X葑#=r|:I"&+TW܊8ג˩@z-Y1Ư1򰂿ò/*~    ]fRL   |  3̙ f峆r*ݕK)+.[8h/^RT[eRmW-4[)P+o+vU,uaΈh/^RV3VYM峆r*ienʥ.[8h/^RV}VYMÝn^@ATeg/^RVȞVYM[)P*{LTeg/^RV[VYM[)P+-n^Y[e6˫5*SllT
eݕK)]\pn^@ܭTeՇ:!ܽyJTKnʥ.[8h/^RWnVYMÝn^@uTegT
mW-ZܽyJeRv\enʥ.[<zUeg/^Rа*Teg/^RWVYM[)P+))]\ykr*ݕH 	        @   	H        &     tree   ݘ    &  @    satellite @   	   	  @    #   
 U t    VOچ[qJ:n6M@	      
  @         h A
      ;A 	        @   	        &  Ȁ @  line @   	0        &   arrow0    &   line0 @        Lٍ5b  3 3id8' r     
     _  "       88     _root   earthball N  ball N  mover N  startDrag R   H ( 	         @    0    =     I B@й52$4M@@03I $D  6    M-jK     2V P@%9jU
PSmG%|Z B             (            this   startDrag R   H ( 	p        .  @       3	 velocity     .  ,        ?  gravity    &	  ?mover    @   	\        &   earthwater    &   earth    & 	   @graph    &
   >ball @      &    @Nv,earthball 	     @        4OD    EyR&@ 	        @   	        &    planet1 @   	        &    planet2 @   	        &   planet3 @   	         &  @  planet5 @   	        &    planet4 @   	          &    planet6 @   	    !     &    planet7 @   	    "     &     planet8 @   	    #     &    planet9 @   	!   $     &  @  planet10 @   	=  %  ?     t          @ '    @ space                   L  t _root obsever space timeratio wt w n planets planet _rotation Math sqrt      N N NG              
   H U      G  N 	GN 
      R O         6    planet1    6    planet2    6    planet3    6	    planet5    6    planet4    6     planet6    6 !   planet7    6 "   planet8    6 #   planet9    6 $   planet10 @ @ ?      @      & %   @v,planets  +   & f2    588C8 	   '   &  @   " ' C 	  ,   ( h        5 x;' Ev2  	   )   (  @   _   *   )  ęU (  ęU       _root 	  obsever N  space N            move = $ * ɕ0C3i\ `   +   )  ęU (  ęU       _root 	  obsever N  space N            reset = & + ɕJC3i\    , MA`P   *@8l   $   - M	}B_    fff%+Jc´pS\4 	   .   -  @   	C   /   ,   .  h<4  .   . rG3L 30 @    !   0 M<  (    (    %BԕB-9 	   1   /   0  @   	j  2  ?        /             N 
 _root earthball earth tree _visible obsever space apple _parent gotoAndStop    N N N O   N N           =        	R     @      1           f     _root 	  obsever N  space N            move =        _parent   gotoAndStop R     @      &( 2 Ŋ62<Ґfix 	  3  ?        / `           D  _root obsever space penetrate move1 truefalse _parent gotoAndStop    N N %    I           R     @      1 `            <  _root obsever space move1 r penetrate _parent gotoAndStop    N N N  I   N N N    g 8    N N 
          R     @   * 3 Ŋ62<Zk?O   4 `	` ?     3    %(q@Y~MG29d'MjD-b1; X|    3f$}  	   5   4  @   ?  6 f]!    X    ^    Q    f    <    C    J            !    (    /    6         @d!o3>Gj+}?䶞e.~y\?gtb#ud*%	gOTf?Gd+	?<zY.ykpL9~-BYρD&U*	pdirS/-$B
Kefgh[	oPTܩì},A8/-ΊuRTQJ!Dd!wTe>`tQ|%}i"J2ՙҷCW=)A4/zwBU!DdWd-~yHs\S,햔dR+il	|jo#뮎RPP:<y- 	}|9E7=LZc<ۇv
eXc 䜹j	?m-(QݑǘW[k83QŨJCk$xe"PVc ܜzs񉞧?m-([QpǿsǸoxˊM	Ht"8 A;
msdN3B O*)B%rZ@z;'3n8$ob#!v'h.f*!ӐebN)dSP:7lf~8}|ǽ%\o`5E[ŨFC)[9͐$dNdP[ x!w҅SJ(Gy) hߎQŞ.(.[ԃ$GŨFB0?}h{B(u7AJ0LrvgQ	JO(`dKHG|;z{<>r}'8tF=LZ*vE D*7Ad2O;p%z4b~	Ѯj2ZP
4!"M1DqVԚL!1jS `j_O* PZ(^^O'% :J;BtywLokI 07S)H_?v}ʃZ`2:=C$5?8s'Fyi@/ʖr%/WKD(u1z@	   7   6  @   ?  8 ^D7"0 " ]	}Uπ |ZQed>  Nn}+  q 1=fQß,ciSxٶ) `$j1^Et{|)-?[~4&?NB^Dk98\ uIFK]       5KrPr6 	!   9   7 ji @  8  @   	   :   5  o    9 8 fader         B   - d                                this   startDrag R       (     @      &, : +R]7ltimeratio    &1 : +RM7scale 	*  ;  ?        /          k     _root   earthball N  ball N	  gravity N  _visible O        _parent   gotoAndStop R     @      1           k     _root   earthball N  ball N	  gravity N  _visible  O        _parent   gotoAndStop R     @   6 ; Ŋ6=l 	,  <  ?        /          l     _root   earthball N  ball N
  velocity N  _visible O        _parent   gotoAndStop R     @      1           l     _root   earthball N  ball N
  velocity N  _visible  O        _parent   gotoAndStop R     @      &8 < Ŋ.=G`velocity 	`  =  ?        /             8  _root planets gotoAndPlay w space _parent gotoAndStop          N R             NO   N N   NO        R     @  v    1           \   $  _root planets gotoAndStop _parent          N R        R     @   : = Ŋ6=ʐ	0  >  ?        /          n     _root   earthball N  earth N  satellite N  _visible O        _parent   gotoAndStop R     @      1           n     _root   earthball N  earth N  satellite N  _visible  O        _parent   gotoAndStop R     @   < > Ŋ=ʵ@	   ?  ?    m    /          U     _root   coordinate N  _visible O        _parent   gotoAndStop R     @  o    1           U     _root   coordinate N  _visible  O        _parent   gotoAndStop R     @   > ? Ŋ6<G`?   @ Arial   	-   A g"0@ ,         ( caption10 Speed: @ A @ 
	7   B o= 0@ ,         ( caption11 Kinetic energy: A B @  	#   C g:P0@ ,          ( showek B C @ ء	9   D o 0@ ,         ( caption12 Potential energy: C D @  P	#   E g:P0@ ,          ( showep D E @ تP	"   F g:0@ ,          ( showv E F @ ژ	B   G o 0@ ,          ( caption4 Free to drill through Earth F G  @(	7   H os 0@ ,          ( caption5 On standing pole G H @(	=   I o 0@ ,          ( caption3 Synchronous satellites H I @G̫@	1   J oY 0@ ,          ( caption8 Satellites I J @Gơ	7   K o[ 0@ ,          ( caption15 Higher accuracy J K @ (@	3   L o 0@ ,         ( caption14 Time Ratio: K L  @ WС	+   M g&O0@ ,         ( caption2 Reset L M  @ j 	-   N g(/0@ ,         ( caption1 Release M N  
@ jr	.   O o5 0@ ,         ( caption13 Scale: N O  @ X	3   P g=0@ ,          ( caption7 Graph gravity O P @ Gƙ	4   Q g>G؍0@ ,          ( caption6 Graph velocity P Q @ GƏ	9   R o 0@ ,          ( caption18 Coordinate system Q R @ (	+   S g3G0@ ,         ( caption9 Time: R S @ n	"   T g;0@ ,          ( showt S T @ Ώ	  U  ?    r    /          Z     _root 	  obsever N  space N	  mm 2   O        _parent   gotoAndStop R     @  t    1           Z     _root 	  obsever N  space N	  mm 
   O        _parent   gotoAndStop R     @   T U Ŋ6<ҵ@v   V   )  ęU (  ęU       _root help    N I         O       O ?   W 宋体   	   X W{
0W ,       (  ?  !   Y l|!d   3 G>@ 	   Z   Y  @   ?   [   )  ęU (  ęU          _root   help  O 	"   \ _Z` 0@ ,       (  help 	%   ] _V_` 0W ,          (  确定  	  ^ _0W ,333     Xd  钩选“自由穿越地球”，则运动物体可以自由地穿越地球。这是一种设想的情景。钩选““静止”于高竿”，则物体被系于设想的竖立于赤道某处的高耸坚固的竿子上。改变“时间比例尺”设置，可以改变演示中1秒钟代表实际运动的多长时间。这个设置对计算精度也有影响。 	   _  ?     V ` @ u1 i @   X  R@ w1@  ) g*:    Z p\@ Kp  [   
 \ t	@  ]   ^ V @   V _ p 	  `       space         b  p; name length0 length1 arrow0 _xscale line0 _x _rotation rotation0 axisx _y axisy apple1 move1 cleardraw _root earthball ball x0 r0 Math max y0 mover vx0 vy0 earth tree _visible fix gotoAndStop x y graph createEmptyMovieClip lineStyle moveTo vx vy r sqrt time draw mm velocity gravity coordinate background0 scale fader GM g k kin satellite timeratio penetrate rest w 1 arrowline  name length1 rotation0 axisx axisy       d     	   H  	 2    	    '   ;   H    )   G  O   	 Q?O  O  	 

 reset   3             =  N N            RO  N N 
           RO  N N N  	  O  N N N 
 	  O  N N N  O        N R
 apple   v   N N N O            =  N N N   N N 
N	 draw   y     !    N !N "R  N !N !N 7  d   ff            #=       $= cleardraw   %     !    N !N "R	 move   2 % N N N N 	   & N N N 
N 	    N N N   N N 
N '     G     (R    ' % & )                 *=           N R +
           ,N R  N N -N  O  .N  O  /N  O  0N 1N 
2   O 2UB  3:?0 43         53      N N N  O  N N 6N  O  N N N K+O  N N N N 	    N N N 
N 	    N N 
2   O  7N 1N 
#   O   8  9  :? 'd              2             2         |J scale _root fader _y Math pow earthball _xscale _yscale planets ball timeratio dt earth _rotation earthwater move1 v1x mover _x v1y v1 sqrt atan2 velocity arrowline r1 penetrate xnew cos ynew sin a k kin ax ay gravity realv ek r ep GM eall apple1 x y min max w xl yl vxl vx vyl vy m mm graph alpha lineStyle lineTo v time p truefalse showek round J/mg showep showv Km/s showt s 	  d     N N N K   	 p?q=
 
       R  N  O  N  O  	N  O  	N  O  N 
N	 '   O  N 
N	 '   O  N N N     2    
       R U@v  N N  N N N q?E<GO  N N  N N N q?E<	 3v@3333GO   I '  N 
N X  N  N    G     R fL@ffff      R   N 
N N    =    G     R   I     H      	          R     R	          R     R       H    !      "  #            $            fL@ffff# $     R   @KL   N 
N %N    = &	 ? '& & @B      (    g (  )        * ( P  3  )* P  Q( ( z  G +' )G , I 	 (,  - - . .G     R     /R	 (2   (     0R -(  N N N	 fL@ffff     R .(  N N N	 fL@ffff     R  N 
N -O  N 
N .O  N 
N N         1 . 	  O  N 
N N 1 - 	  O  I  2- 3. 45 67 8         8 9H  88    G (- - . .G     R (    H    ! ( (    " ( #          - ( $          . ( 55 #  9G 77 $  9G -- 5  9G .. 7  9G  N :N :N h  (    H   ;      ;d    ;             <= . -    == & >5 5 7 7G     R ?? G  N 
N   - . fL@ffff5 7     R > 	    N 
N N    = fL@ffff# $     R      N 
N %N    =  @ NO &>	 o@   I (    H    N 
N 2O  N 
N 3O A  N 
N N $  4 	   6 	   '& & @B      )+ '  B'       CR 
    DGO  E)       CR 
    DGO  F& d        CR d    GGO  H?     CR IGO     @ @      &c `   @obsever  !   a U4 s    T9ijtI 	   b   a  @       c ` >    Uac   d " $ M   :7SbLL 5ibUG</ܬs7GQiUsoR 5gf Rj7 kSz@]:Z{ 6L |>}w lBpZG zv 5`br3ʊ7#ܷcr3K 5cvv{Ip)*	MQ@&uJ0R*AN0z[	쐛(ZjI 0%6Ww|-p/6@K8rQsJ㔦$9Tqr;y3@Z^
)@J  5iVf[y@& Ǯ*pV 17`[T3p]\2\@h=7@4##Ҙ< 5GdK.|XcM..F &r B#
b$&C1*bS D6N쐜Js_C M.6'3 AY5d&PUUSU;\ L b GrinJvݒxi97HFrkH` 5dFPӖ3XE{^v 5dFVӖ3 5hjeJXXLQT] T c07riiJ-Y, KtR4
%45'6aiXԺMyM9one:U3lV`&@ % 5GtS ` z\w h" FCa9Kb N K!% 6 ^>q O lw V  5cU9 NVUHs-ɧ-_ 5dAxi~]/ $*a@0E%dTiM% P"Ȇ  u1!q @"YlUNj:h	@L?jS֛m׵h  5dΑY[]!H)sMh-͛ݰOEصݵ%fe5iPfZjh & ΛC8_fpdL*@2L/qÀn25iq6f`M6*@_k.#-= 2   d Arial Black  M P T a d e h i l m o r s t u y R   e p* 
d  `@qTYPm0GafW051Td5XG kiP  	   f   e  @	H @     g   4F
-FZ왽Ć2yIe_lllP֟δ5_3ӀiY8VFP/YKKYM_y"om8f<u -fӣuwms>UBuK<2)v*e<&toJwOz VHJ:qo%z*/G;Im'DRQQ{Su1%&q9#'I<ާ]ykn]Am4m!o~~)@hvJM #HE&r2㵇664C46T*O(u1cLzӀ0>9	y_%=
 }sg -ic.E_D6Nq/٣%vH2kDkJiWa2o/	'S f)%Y(-goP 
NI 	6#z|LHX 0&Oׅ.{\Bg'Y:;*Viw(`2ih"i;27re0><
d+e x>녳8n
[Iu;ݨYWObύY -i^f̖\9@t3}m<#EIFQKL-_>]#y+ V֠zMr	u^TeD%0%RmԚңz.2xҐdzd:c?gCΚ.߿,֙'r0DַήLs3Tɀ:26O2e5d&;ɬ*pzn^ʜa%eyЎM7 -hu0`ntn6\7Ǯۭm`
ݴbiMci	@PPtdw$e
M{NoWP)l:\Ez=}k_R *pY啅<t>8 Tz/0NR䮲R<Hefa7AFA9yLkKf1 (ٴ4i#R>r\ϻk<5FhN2u%b5#%~

Pp5J}8 :%]iȐ X05GS_z#AV4ԀoErt醺v\&MCxmAZ,KhKLLֺe=ʻR@=j}=Mz47Chd^@6qh -hFg 8Cb|ib9--'JgO!vsvKb!7pd2KLʋSV@ClԄפcvuOmy(ji2y ¿->Yrh{~$MEK$Zm 0EB3=4#-lκtfZ\V<HX y IR$N@[MJY>u
~4ğ_ZY@hJʐX K_XuN >UCzMB?(Ȟ"iOpvGp~3l Oim!fdGHc䃥MdCC}J+i=,2?O&'[{ 0
ҿJŧS	 c2\I_ 4& jcl%׮2A%-N#ߪ&Й exioKLdc5=`j 1Dr d -W@
i9-hs^ͮao%1g=;:!+Z}6'߀#],g:Qk*P}#7'rqGpmsǟKeRHH	M5ڵW8	!my)C¤B _IxJkg6 v.&%v*]%!-CkDހuDF]/:/0w?6/'#,do3
 R0D˥L~_:h[<`+s?]t~j2ٳIvW5 -f°fϏZ϶pFIC $=K[, kXWoH^A[2 ym[?u{Xm8J ^r6woIUā 2/<ސ۴
oxgz'2(
pޕ?no-t.~NmoFX ZCa ?OȀ ͯe9wg.dtA9L9yc[M 7gF}lA|\͠I.X*X<CA[҉q2`EO;&gY g-~gvĉG-*wa?I ^6( iʝ52&q?[RִJt޴i3]3(܀]Sn^Y{dK -h6=l/.Gӂ:׉zH3Qdڋ ܫƷ6reLs8Y +ߗ[/$ 4~K\V,QV΀Km,/=R$Zvw/0``
Qy{3GlY {vɠ#7XfųRJ0(O)+kX;ם%Jd9,u!~4ωج5(igWpv$W>&hH< :TzYMi4ef-5&{\²H~i@AYfTrʢR ތۓxbM'4,nS%>f;sZ;ҤZsL+	@,Yqy㵲o)kBo1i.F\O8i֭2m=˚ -fg.CZ높p2`pv!)B& 4ytiT,/=k<8+߭4C 1)ǯ|{m⬓I9iIq*ںP@1Vnz]YlNз < 	f`֏9-8CJN ,s XSYRsw$'Y@sJCC(LC&`SmE*PYB@ VN=^{Mm˗(,kPwudc[:, PxnWpH, '   g 文鼎CS魏碑 NTY*YR`cfg|3+   h h
^`  
g @
V@Yd%@dFA  	   i   h ( @   	   j   b @ r   c Ȑ    c   v b ,  p     & f  coordinate1    &	 f , 1  ^HZ coordinate2    & i  ccoordinate1    & i ,   ^pccoordinate2 @      &e j @v,coordinate 4   k hSA  
d fBt.OD=Bd x s k  @:ObH0@   " $ & ( * , 1 6 8 : < > @ A B C D E F G H I J K L M N O P Q R S T V c e @ @   
