ÌâÄ¿ÄÚÈÝ
£¨1£©ÏÖÐиßÖÐÎïÀí½Ì²ÄµÄѧÉúʵÑéÖУ¬Ê¹ÓÃÁËÖØ´¸ÏßµÄÊÇA¡¢Ñо¿Æ½Å×ÎïÌåµÄÔ˶¯
B¡¢ÑéÖ¤»úеÄÜÊغ㶨ÂÉ
C¡¢ÑéÖ¤¶¯Á¿Êغ㶨ÂÉ
D¡¢Óõ¥°Ú²â¶¨ÖØÁ¦¼ÓËÙ¶È
£¨2£©Ä³Í¬Ñ§ÓÃÈçͼËùʾµÄ×°ÖÃ×ö¡°ÑéÖ¤¶¯Á¿Êغ㶨ÂÉ¡±µÄʵÑ飮±¾ÊµÑéÖбØÐë²âÁ¿µÄÎïÀíÁ¿ÓУº £®
A£®Ð±²Û¹ìµÀÄ©¶Ëµ½Ë®Æ½µØÃæµÄ¸ß¶ÈH
B£®Ð¡Çòa¡¢bµÄÖÊÁ¿ma¡¢mb
C£®Ð¡Çòa¡¢bµÄ°ë¾¶r
D£®Ð¡Çòa¡¢bÀ뿪б²Û¹ìµÀÄ©¶ËºóƽÅ×·ÉÐеÄʱ¼ät
E£®¼Ç¼ֽÉÏOµãA¡¢B¡¢C¸÷µãµÄ¾àÀëOA¡¢OB¡¢OC
F£®aÇòµÄ¹Ì¶¨Êͷŵ㵽б²Û¹ìµÀÄ©¶Ëˮƽ²¿·Ö¼äµÄ¸ß¶È²îh£®
¡¾´ð°¸¡¿·ÖÎö£º£¨1£©¸ù¾Ý¶Ô¸÷ʵÑéÔÀí¼°Æ÷²ÄµÄÕÆÎÕ·ÖÎö´ðÌ⣮
£¨2£©¸ù¾ÝʵÑéÔÀíºÍʵÑéÄ¿µÄ¿ÉÒÔÖªµÀÑéÖ¤¶¯Á¿Êغ㶨ÂÉʵÑéÖÐÄÄЩÁ¿Òª²âÁ¿£¬Ôõôͨ¹ýÎïÀí¹æÂɲâÁ¿£®
½â´ð£º½â£º£¨1£©A¡¢Ñо¿Æ½Å×ÎïÌåµÄÔ˶¯ÊµÑéÖУ¬Ä¾°åÓ¦ÔÚÊúֱƽÃæÄÚ£¬ÐèÒªÓÃÖØ´¸Ïߣ¬¹ÊAÕýÈ·£»
B¡¢ÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬²»ÐèÒªÖØ´¸Ïߣ¬¹ÊB´íÎó£»
C¡¢ÑéÖ¤¶¯Á¿Êغ㶨ÂÉ£¬ÐèÒªÓÃÖØ´¸ÏßÈ·¶¨Ð¡ÇòÔ˶¯µÄÆðµãλÖ㬹ÊCÕýÈ·£»
D¡¢Óõ¥°Ú²â¶¨ÖØÁ¦¼ÓËٶȣ¬²»ÐèÒªÖØ´¸Ïߣ¬¹ÊD´íÎó£»
¹ÊÑ¡AC£®
£¨2£©Ð¡ÇòÀ뿪¹ìµÀºó×öƽÅ×Ô˶¯£¬Ð¡ÇòÏÂÂäµÄ¸ß¶ÈÏàͬ£¬ÔÚ¿ÕÖеÄÔ˶¯Ê±¼ätÏàͬ£¬ÓÉx=vt¿ÉÖª£¬Ð¡ÇòµÄˮƽλÒÆÓëСÇòµÄ³õËÙ¶Èv³ÉÕý±È£¬¿ÉÒÔÓÃСÇòµÄˮƽλÒÆ´úСÇòµÄ³õËٶȣ¬Èç¹ûСÇò¶¯Á¿Êغ㣬Âú×ã¹Øϵʽ£ºmAv=mAv1+mBv2£¬¹ÊÓÐmAvt=mAv1t+mBv2t£¬¼´mAOB=mAOA+mBOC£»ÓÉ´Ë¿ÉÖª£ºÐ¡Çòa¡¢bµÄÖÊÁ¿ma¡¢mb£¬¼Ç¼ֽÉÏOµãA¡¢B¡¢C¸÷µãµÄ¾àÀëOA¡¢OB¡¢OC£¬¹ÊÑ¡BE£®
¹ÊÑ¡£¨1£©AC£»£¨2£©BE£®
µãÆÀ£ºÖªµÀʵÑéµÄʵÑéÔÀíÊÇÕýÈ·½âÌâµÄ¹Ø¼ü£¬·ÖÎöͼʾÇé¾°¼´¿ÉÕýÈ·½âÌ⣮
£¨2£©¸ù¾ÝʵÑéÔÀíºÍʵÑéÄ¿µÄ¿ÉÒÔÖªµÀÑéÖ¤¶¯Á¿Êغ㶨ÂÉʵÑéÖÐÄÄЩÁ¿Òª²âÁ¿£¬Ôõôͨ¹ýÎïÀí¹æÂɲâÁ¿£®
½â´ð£º½â£º£¨1£©A¡¢Ñо¿Æ½Å×ÎïÌåµÄÔ˶¯ÊµÑéÖУ¬Ä¾°åÓ¦ÔÚÊúֱƽÃæÄÚ£¬ÐèÒªÓÃÖØ´¸Ïߣ¬¹ÊAÕýÈ·£»
B¡¢ÑéÖ¤»úеÄÜÊغ㶨ÂÉ£¬²»ÐèÒªÖØ´¸Ïߣ¬¹ÊB´íÎó£»
C¡¢ÑéÖ¤¶¯Á¿Êغ㶨ÂÉ£¬ÐèÒªÓÃÖØ´¸ÏßÈ·¶¨Ð¡ÇòÔ˶¯µÄÆðµãλÖ㬹ÊCÕýÈ·£»
D¡¢Óõ¥°Ú²â¶¨ÖØÁ¦¼ÓËٶȣ¬²»ÐèÒªÖØ´¸Ïߣ¬¹ÊD´íÎó£»
¹ÊÑ¡AC£®
£¨2£©Ð¡ÇòÀ뿪¹ìµÀºó×öƽÅ×Ô˶¯£¬Ð¡ÇòÏÂÂäµÄ¸ß¶ÈÏàͬ£¬ÔÚ¿ÕÖеÄÔ˶¯Ê±¼ätÏàͬ£¬ÓÉx=vt¿ÉÖª£¬Ð¡ÇòµÄˮƽλÒÆÓëСÇòµÄ³õËÙ¶Èv³ÉÕý±È£¬¿ÉÒÔÓÃСÇòµÄˮƽλÒÆ´úСÇòµÄ³õËٶȣ¬Èç¹ûСÇò¶¯Á¿Êغ㣬Âú×ã¹Øϵʽ£ºmAv=mAv1+mBv2£¬¹ÊÓÐmAvt=mAv1t+mBv2t£¬¼´mAOB=mAOA+mBOC£»ÓÉ´Ë¿ÉÖª£ºÐ¡Çòa¡¢bµÄÖÊÁ¿ma¡¢mb£¬¼Ç¼ֽÉÏOµãA¡¢B¡¢C¸÷µãµÄ¾àÀëOA¡¢OB¡¢OC£¬¹ÊÑ¡BE£®
¹ÊÑ¡£¨1£©AC£»£¨2£©BE£®
µãÆÀ£ºÖªµÀʵÑéµÄʵÑéÔÀíÊÇÕýÈ·½âÌâµÄ¹Ø¼ü£¬·ÖÎöͼʾÇé¾°¼´¿ÉÕýÈ·½âÌ⣮
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿