ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÏÂÁÐÓйØÉùÏÖÏóµÄ˵·¨ÕýÈ·µÄÊÇ( )
A.ÕýÔÚ·¢ÉùµÄÒô²æ£¬Ê¹µõ×ŵÄƹÅÒÇò·´¸´µ¯Æ𣮸ÃʵÑé˵Ã÷·¢ÉùµÄÎïÌåÔÚÕñ¶¯
B.Óò»Í¬µÄÁ¦»÷¹Ä£¬ÌýÆä·¢Éù£¬¹Û²ìֽм±»µ¯ÆðµÄ¸ß¶È£®¸ÃʵÑé˵Ã÷ÉùÒôµÄÏì¶ÈÓëƵÂÊÓйØ
C.¸Ä±ä¸Ö³ßÉì³ö×À±ßµÄ³¤¶È£¬ÓÃÏàͬµÄÁ¦²¦¶¯ÌýÆä·¢Éù£¬¸ÃʵÑé˵Ã÷ÉùÒôµÄÒôµ÷ÓëÕñ·ùµÄÓйØ
D.Öð½¥³é³öÕÖÄÚ¿ÕÆø£¬Ìýµ½ÁåÉù½¥Ð¡£®¸ÃʵÑé˵Ã÷ÉùÒôµÄ´«²¥²»ÐèÒª½éÖÊ
¡¾´ð°¸¡¿A
¡¾½âÎö¡¿
A£®ÕýÔÚ·¢ÉùµÄÒô²æʹСÇòµ¯Æð˵Ã÷·¢ÉùÌåÔÚÕñ¶¯£¬A·ûºÏÌâÒ⣻
B£®²»Í¬Á¦¶ÈÇû÷¹Ä£¬¹ÄµÄÕñ·ù²»Í¬£¬Ïì¶È²»Í¬£¬ËµÃ÷ÉùÒôµÄÏì¶ÈÓëÕñ·ùµÄ¹Øϵ£¬B²»·ûºÏÌâÒ⣻
C£®¸Ä±ä¸Ö³ßÉì³ö³¤¶È£¬ÓÃÏàͬµÄÁ¦²¦¶¯£¬¸Ö³ßµÄƵÂʲ»Í¬£¬Òôµ÷²»Í¬£¬ËµÃ÷ÉùÒôµÄÒôµ÷ÓëƵÂʵĹØϵ£¬C²»·ûºÏÌâÒ⣻
D£®³é³ö¿ÕÆøÁåÉù¼õС˵Ã÷ÉùÒô´«²¥ÐèÒª½éÖÊ£¬D²»·ûºÏÌâÒ⣮
¡¾ÌâÄ¿¡¿ÔÚ¡°²âÁ¿ÎïÌåÔ˶¯µÄƽ¾ùËٶȡ±ÊµÑéÖУº
£¨1£©Ð¡Çò´ÓA´¦ÑØбÃæÓɾ²Ö¹¿ªÊ¼¹öÏ£¬ÆµÉÁÕÕÏà»ú¼Ç¼ÁËСÇòÔÚÏàͬʱ¼äÄÚͨ¹ýµÄ·³Ì£¬Èçͼ¼×Ëùʾ£¬Ð¡ÇòÔÚ×ö_____£¨Ñ¡Ìî¡°¼ÓËÙ¡±¡°¼õËÙ¡±»ò¡°ÔÈËÙ¡±£©Ô˶¯£®
£¨2£©ÊµÑéÊý¾ÝÈç±íËùʾ£¬Ð¡ÇòÔÚBC¶ÎµÄƽ¾ùËÙ¶ÈΪ _____ m/s. CD¶ÎµÄ·³ÌΪ_____m£¬±È½ÏABÓëBC¶ÎµÄƽ¾ùËٶȵÃvAB_____vBC£¨Ñ¡Ìî¡°£¾¡±¡°£¼¡±»ò¡°£½¡±£©£®
·³Ì£¨m£© | Ô˶¯Ê±¼ä£¨s£© | ƽ¾ùËٶȣ¨m/s£© | ¾¹ýijµãʱµÄËٶȣ¨m/s£© |
sAB£½0.3 m | tAB£½0.5 s | vAB£½0.6 m/s | vB£½1.2 m/s |
sBC£½0.9 m | tBC£½0.5 s | vBC£½ | vC£½2.4 m/s |
SCD£½ | tCD£½0.5 s | vCD£½3 m/s | vD£½3.6 m/s |
£¨3£©Îª½øÒ»²½Ì½¾¿Ð¡ÇòÔÚбÃæÉÏÔ˶¯µÄËÙ¶ÈÓëʱ¼äµÄ¹Øϵ£¬¸ù¾Ý±íÖÐÊý¾Ý×ö³öÁËv-tͼÏó£¬Èçͼ14ÒÒËùʾ£¬¼ÙÉèбÃæ×ã¹»³¤£¬Ð¡Çò´ÓA´¦¹öÏ£¬¾¹ý2 sµ½´ïEµãʱµÄËÙ¶ÈΪ_____m/s.
£¨4£©Ð¡ÇòÔÚÔ˶¯¹ý³ÌÖУ¬¾¹ý·³ÌsABÖеãʱµÄËÙ¶ÈΪv1£¬¾¹ýʱ¼ätABÖеãʱµÄËÙ¶ÈΪv2£¬Ôòv1_____ v2£¨Ñ¡Ìî¡°£¾¡±¡°£¼¡±»ò¡°£½¡±£©£®
¡¾ÌâÄ¿¡¿ÎªÁË̽¾¿µçÁ÷¸úµçѹµÄ¹Øϵ£¬ÍõÁÁͬѧÉè¼ÆÁËͼ¼×ËùʾµÄµç·£®
£¨1£©Çë¸ù¾Ýµç·ͼ£¬ÓñʻÏß´úÌæµ¼Ïß½«Í¼ÒÒÖÐδÁ¬³ÉÍêÕûµÄµç·Á¬½ÓÆðÀ´£¨µ¼Ïß²»Äܽ»²æ£©£®
£¨2£©µ÷½Ú»¬Æ¬Î»Ö㬸ı䶨ֵµç×èÁ½¶ËµÄµçѹ£¬¶Á³öÆäÖÐÈý×éµçÁ÷±í¡¢µçѹ±íµÄʾÊý£¬Èç±í£¨Ò»£©ÖÐËùʾ£®¢ÙÓÉ±í£¨Ò»£©ÖеÄÊý¾Ý¿É֪ʵÑéʹÓõĶ¨Öµµç×èµÄ×èÖµÊÇ ¦¸£®
¢ÚÓÉ±í£¨Ò»£©ÖеÄÊý¾Ý½øÐзÖÎö£¬¿É¹éÄɳöµÄ½áÂÛÊÇ £®
±í£¨Ò»£©
´ÎÐò | 1 | 2 | 3 |
µçѹ£¨V£© | 2.0 | 4.0 | 6.0 |
µçÁ÷£¨A£© | 0.1 | 0.2 | 0.3 |
±í£¨¶þ£©
´ÎÐò | 1 | 2 | 3 |
µç×裨¦¸£© | 5 | 10 | 15 |
µçÁ÷£¨A£© | 1.2 | 0.6 | 0.4 |
£¨3£©Èç¹ûÈÔÓÃͼ¼×µç·Ñо¿µçÁ÷Óëµç×èµÄ¹Øϵ£¬ÊµÑéÖе±»»Óò»Í¬×èÖµµÄ¶¨Öµµç×èºó£¬Ã¿´ÎÓ¦µ÷½Ú»¬¶¯±ä×èÆ÷µÄ»¬Æ¬£¬±£³Ö ²»±ä£®ÊµÑé¼Ç¼Êý¾ÝÈç±í£¨¶þ£©Ëùʾ£¬¸ù¾Ý±í£¨¶þ£©Êý¾Ý¿ÉµÃ³öµÄ½áÂÛÊÇ £®£¨ÊµÑéÆ÷²ÄʹÓÃÕýÈ·£¬Á¿³ÌÑ¡ÓúÏÀí£©£®