ÌâÄ¿ÄÚÈÝ
³µÕ¾Ê¹ÓõÄˮƽ´«ËÍ´ø×°ÖõÄʾÒâͼÈçͼËùʾ£¬±Á½ôµÄ´«ËÍ´øʼÖÕ±£³Ö3.0 m/sµÄºã¶¨ËÙÂÊÔËÐУ¬´«ËÍ´øµÄˮƽ²¿·ÖAB¾àˮƽµØÃæµÄ¸ß¶ÈΪh£½0.45 m¡£ÏÖÓÐÒ»ÐÐÀî°ü£¨¿ÉÊÓΪÖʵ㣩ÓÉA¶Ë±»´«Ë͵½B¶Ë£¬ÇÒ´«Ë͵½B¶ËʱûÓб»¼°Ê±È¡Ï£¬ÐÐÀî°ü´ÓB¶ËˮƽÅ׳ö£¬²»¼Æ¿ÕÆø×èÁ¦£¬gÈ¡10 m/s2¡£
£¨1£©ÈôÐÐÀî°ü´ÓB¶ËˮƽÅ׳öµÄ³õËÙv 0£½3.0 m/s£¬ÇóËüÔÚ¿ÕÖÐÔ˶¯µÄʱ¼äºÍ·É³öµÄˮƽ¾àÀ룻
£¨2£©ÈôÐÐÀî°üÒÔv 0£½1.0 m/sµÄ³õËÙ´ÓA¶ËÏòÓÒ»¬ÐУ¬ÐÐÀî°üÓë´«ËÍ´ø¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì£½0.20£¬ÒªÊ¹Ëü´ÓB¶Ë·É³öµÄˮƽ¾àÀëµÈÓÚ£¨1£©ÖÐËùÇóµÄˮƽ¾àÀ룬Çó´«ËÍ´øµÄ³¤¶ÈLÓ¦Âú×ãµÄÌõ¼þ¡£
£¨1£©£¨2£©£¨3£©
½âÎö:Á½ÖÖ·½Ê½ÊÍ·Å´ÓAµ½BÖ»ÓÐλÒÆÏàͬ£¬ÉèAB³¤ÎªL
£¨1£©Ë®Æ½·½ÏòλÒÆ ¢Ù
ÊúÖ±·½ÏòλÒÆ¡¡¡¡¢Ú
ÓÉ¢Ù£¬´úÈë¢ÚµÃ
£¨2£©½«LÖµ´úÈ룬
Ï»¬ÎïÌå¼ÓËٶȣ¬£¬
µÃ
½«L¡¢a´úÈ룬
Ôò¡£
£¨3£©Æ½Å×Ô˶¯Ë®Æ½·ÖËٶȣ¬ÊúÖ±·ÖËÙ¶È
Ï»¬Ô˶¯Ë®Æ½·ÖËٶȣ¬ ÊúÖ±·ÖËÙ¶È
ÓÉÓÚ
ËùÒÔ£¬
Ôò£¬