ÌâÄ¿ÄÚÈÝ

¡¾ÎïÀí¡ª¡ªÑ¡ÐÞ3¡ª4¡¿£¨15·Ö£©
£¨1£©£¨5·Ö£©ÕñÔ´ÒÔÔ­µãOΪƽºâλÖã¬ÑØyÖá·½Ïò×ö¼òгÔ˶¯£¬Ëü·¢³öµÄ¼òг²¨ÔÚxÖáÉÏÒÔv=2m/sÑØÕý·½Ïò´«²¥£¬ÔÚijһʱ¿ÌµÄ²¨ÐÎÈçͼËùʾ¡£ÔÚÔ­µãµÄÓÒ·½ÓÐÒ»ÖÊÔªP´Óͼʾʱ¿Ì¿ªÊ¼£¬¾­¹ý0£®5sÔÚxÖáÏ·½ÇÒÏòÉÏÔ˶¯£¬ÔòÖÊÔªPËùÔÚµÄλÖÿÉÄÜÊÇ        ¡£

A£®0£®5 m
B£®1£®5m
C£®2£®5 m
D£®3£®5m
£¨2£©£¨10·Ö£©ÈçͼËùʾ£¬¸ß¶ÈΪH=1mÔ²ÖùÐÎÈÝÆ÷ÖÐÊ¢ÂúÕÛÉäÂÊn =µÄijÖÖ͸Ã÷ÒºÌ壬ÈÝÆ÷µ×²¿°²×°Ò»¿éƽÃæ¾µ£¬ÈÝÆ÷Ö±¾¶L=2H£¬ÔÚÔ²ÐÄOµãÕýÉÏ·½h¸ß¶È´¦ÓÐÒ»µã¹âÔ´S¡£
¢Ùµã¹âÔ´S·¢³öµÄ¹âÔÚË®Öд«²¥µÄËÙ¶ÈΪ¶àÉÙ£¿
¢Ú´ÓÒºÌåÉÏ·½¹Û²ìҪʹS·¢³öµÄ¹âÕÕÁÁÕû¸öÒºÌå±íÃ棬hÓ¦¸ÃÂú×ãʲôÌõ¼þ£¿£¨ÒÑÖª£©

£¨1£©C
£¨2£©¢Ùm/s
¢Úm1m

½âÎö£¨1£©£¨5·Ö£©C
£¨2£©£¨10·Ö£©¢ÙÓÉ £¨2·Ö£©µÃ£¬m/s £¨2·Ö£©
¢Úµã¹âÔ´Sͨ¹ýƽÃæ¾µËù³ÉÏñΪS/£¬ÈçͼËùʾ£¬Èç¹û·´Éä¹âÏßÄÜÕÕÁÁÈ«²¿ÒºÃæÔòÈëÉä½ÇÓ¦Âú×ãi¡ÜC£¨1·Ö£©£¬CΪȫ·´ÉäÁÙ½ç½Ç

£¨1·Ö£©£¬ C=370
£¨2·Ö£©£¬L=2H
½âµÃ£ºm1m £¨2·Ö£©

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø