£¨09ÄêÁúÑÒÒ»ÖÐÔ¿¼£©£¨9·Ö£©ÔçÆÚÈËÀàá÷ÁÔµÄÖ÷Òª¹¤¾ßΪ±êǹ,ÈçͼËùʾ£®Ò»Ö»Ò°ÍÃ(¸ß¶È²»¼Æ)ÒÔËÙ¶Èv1=20m/sµÄËÙ¶ÈÑØABÏòÓÒÔÈËÙ±¼ÅÜ£¬ÁÔÊÖÒþ²ØÔÚÓëÖ±ÏßABÏà¾àd=9.
(1)Ò°Íñ»ÉäÖÐʱÓëcµãµÄ¾àÀëL¡£
(2)±êǹµÄ³õËÙ¶Èv2µÄ´óС¡£
½âÎö£º(1) ǹ×öƽÅ×Ô˶¯£¬ÓС£¡¡¡¡¡¡¡¡¡¡¡¡¢Ù (2·Ö)
Ò°Íñ»ÉäÖÐʱÓëCµãµÄ¼ä¾àL= ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¢Ú (1·Ö)
Óɢ٢ڿɵÃL=12m ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¢Û (1·Ö)
(2) ǹµÄˮƽÉä³ÌS= ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¢Ü (2·Ö)
Óɼ¸ºÎ¹Øϵ ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¢Ý (2·Ö)
Óɢۢܢݿɵà =25m£¯s ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¢Þ (1·Ö)
Ä꼶 | ¸ßÖÐ¿Î³Ì | Ä꼶 | ³õÖÐ¿Î³Ì |
¸ßÒ» | ¸ßÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ | ³õÒ» | ³õÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ |
¸ß¶þ | ¸ß¶þÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õ¶þ | ³õ¶þÃâ·Ñ¿Î³ÌÍƼö£¡ |
¸ßÈý | ¸ßÈýÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õÈý | ³õÈýÃâ·Ñ¿Î³ÌÍƼö£¡ |
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
£¨09ÄêÁúÑÒÒ»ÖÐÔ¿¼£©£¨6·Ö£©ÎªÁËÏìÓ¦¹ú¼ÒµÄ¡°½ÚÄܼõÅÅ¡±ºÅÕÙ£¬Ä³Í¬Ñ§²ÉÓÃÁËÒ»¸ö¼ÒÓÃÆû³µµÄ½ÚÄÜ·½·¨¡£ÔÚ·ûºÏ°²È«ÐÐÊ»µÄÒªÇóµÄÇé¿öÏ£¬Í¨¹ý¼õÉÙÆû³µºó±¸ÏäÖзÅÖõIJ»³£ÓÃÎïÆ·ºÍ¿ØÖƼÓÓÍÁ¿µÈ´ëÊ©£¬Ê¹Æû³µ¸ºÔؼõÉÙ¡£¼ÙÉèÆû³µÒÔ72km/hµÄËÙ¶ÈÐÐʻʱ£¬¸ºÔظıäÇ°¡¢ºóÆû³µÊܵ½×èÁ¦·Ö±ðΪ2000NºÍ1950N¡£Çë¼ÆËã¸Ã·½·¨Ê¹·¢¶¯»úÊä³ö¹¦ÂʼõÉÙÁ˶àÉÙ£¿
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
£¨09ÄêÁúÑÒÒ»ÖÐÔ¿¼£©£¨10·Ö£©ÔÚ±±¾©¾ÙÐеĵڶþÊ®¾Å½ì°ÂÁÖÆ¥¿ËÔ˶¯»áÒÑÂäÏÂá¡Ä»¡£ÔÚ°ÂÔË»áµÄÌåÓý±ÈÈüÏîÄ¿ÖУ¬³Å¸ËÌø¸ßÊÇÖ¸Ô˶¯Ô±Ë«ÊÖÎÕסһ¸ùÌØÖƵÄÇá¸Ë£¬¾¹ý¿ìËÙÖúÅܺ󣬽èÖúÇá¸Ë³ÅµØµÄ·´µ¯Á¦Á¿£¬Ê¹ÉíÌåÌÚÆð£¬Ô¾¹ýºá¸Ë¡£µ±½ñÄÐ×ÓÊÀ½ç¼Ç¼´ïµ½ÁË6.14mÔÚ±¾½ì°ÂÔË»áÉ϶íÂÞ˹ѡÊÖÒÁÐÁ°ÍÒ®ÍÞ´´ÔìÁËÅ®×ӳŸËÌø¸ßеÄÊÀ½ç¼Í¼£¬³É¼¨´ïµ½5.05m¡£ÕâÊÇÒ»Ïî¼¼ÊõÐÔºÜÇ¿µÄÌåÓýÔ˶¯£¬¿ÉÒÔ¼ò»¯³ÉÈý¸ö½×¶Î£¬ÖúÅÜ¡¢ÆðÌø³Å¸ËÉÏÉý¡¢Ô½¸ËϽµÂäµØ¡£(g=10m£¯s2 )ÎÊ£º
£¨1£©Èç¹ûÔ˶¯Ô±Ö»ÊÇͨ¹ý½èÖú³Å¸Ë°ÑÖúÅÜÌṩµÄ¶¯ÄÜת»¯ÎªÉÏÉý¹ý³ÌÖеÄÖØÁ¦ÊÆÄÜ£¬ÄÇôÔ˶¯Ô±ÖúÅܵ½10m£¯sºóÆðÌø£¬×î¶àÄÜʹ×ÔÉíÖØÐÄÉý¸ß¶àÉÙ?
£¨2£©ÈôÔ˶¯Ô±ÌåÖØ75kg£¬ÖúÅܵ½8m£¯sºóÆðÌø£¬Ê¹ÖØÐÄÉý¸ß5mºóÔ½¹ýºá¸Ë£¬´Ó×î¸ßµãµ½ÂäµØ¹ý³ÌÖÐˮƽλÒÆΪ2m£¬Ô˶¯Ô±ÔÚ×î¸ßµãˮƽËÙ¶ÈΪvΪ¶àÉÙ£¿
£¨3£©ÔÚµÚ£¨2£©ÎʵĹý³ÌÖУ¬¸ÃÔ˶¯Ô±ÆðÌø³Å¸ËÉÏÉý½×¶ÎÖÁÉٰѶàÉÙÌåÄÚÉúÎﻯѧÄÜת»¯³É»úеÄÜ?
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
£¨09ÄêÁúÑÒÒ»ÖÐÔ¿¼£©(10·Ö)ÈçͼËùʾ£¬ÊÇÓÃÂäÌå·¨ÑéÖ¤»úеÄÜÊغ㶨ÂɵÄʵÑé×°Öᣣ¨gÈ¡9.80m/s2£©
(1) Ñ¡³öÒ»ÌõÖ½´øÈçͼËùʾ£¬ÆäÖÐOµãΪ´òµã¼ÆʱÆ÷´òϵĵÚÒ»¸öµã£¬A¡¢B¡¢CΪÈý¸ö¼ÆÊýµã£¬´òµã¼ÆʱÆ÷ͨÒÔ50HzµÄ½»Á÷µç¡£Ó÷ֶÈֵΪ1mmµÄ¿Ì¶È³ß²âµÃOA=12.41cm£¬OB=18.90cm£¬OC=27.06cm£¬ ÔÚ¼ÆÊýµãAºÍB¡¢BºÍCÖ®¼ä»¹¸÷ÓÐÒ»¸öµã£¬ÖØ´¸µÄÖÊÁ¿Îª1.00kg¡£¼×ͬѧ¸ù¾ÝÒÔÉÏÊý¾ÝËã³ö£ºµ±´òµã¼ÆʱÆ÷´òµ½BµãʱÖØ´¸µÄÖØÁ¦ÊÆÄܱȿªÊ¼ÏÂÂäʱ¼õÉÙÁË__________J£»´òµã¼ÆʱÆ÷´òµ½BµãʱÖØ´¸µÄËÙ¶ÈvB=__________m/s£¬´ËʱÖØ´¸µÄ¶¯ÄܱȿªÊ¼ÏÂÂäʱÔö¼ÓÁË__________J¡££¨½á¹û¾ù±£ÁôÈýλÓÐЧÊý×Ö£©
(2)ijͬѧÀûÓÃËû×Ô¼ºÊµÑéʱ´ò³öµÄÖ½´ø£¬²âÁ¿³öÁ˸÷¼ÆÊýµãµ½´òµã¼ÆʱÆ÷´òϵĵÚÒ»¸öµãµÄ¾àÀëh£¬Ëã³öÁ˸÷¼ÆÊýµã¶ÔÓ¦µÄËÙ¶Èv£¬ÒÔhΪºáÖᣬÒÔΪ×ÝÖỳöÁËÈçÉÏͼµÄͼÏß¡£Í¼ÏßµÄбÂʽüËƵÈÓÚ_____________¡£
A.19.6 B.9.80 C.4.90
ͼÏßδ¹ýÔµãOµÄÔÒòÊÇ__________________________________________________¡£
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
£¨09ÄêÁúÑÒÒ»ÖÐÔ¿¼£©£¨8·Ö£©Ä³Ì½¾¿Ñ§Ï°Ð¡×éµÄͬѧÓûÑéÖ¤¡°¶¯Äܶ¨Àí¡±£¬ËûÃÇÔÚʵÑéÊÒ×é×°ÁËÒ»Ì×ÈçͼËùʾµÄ×°Öã¬ÁíÍâËûÃÇ»¹ÕÒµ½ÁË´òµã¼ÆʱÆ÷ËùÓõÄѧÉúµçÔ´¡¢µ¼Ïß¡¢¸´Ð´Ö½¡¢Ö½´ø¡¢Ð¡Ä¾¿é¡¢Ï¸É³£®µ±»¬¿éÁ¬½ÓÉÏÖ½´ø£¬ÓÃϸÏßͨ¹ý»¬ÂÖ¹ÒÉÏ¿ÕµÄСɳͰʱ£¬ÊÍ·ÅСͰ£¬»¬¿é´¦ÓÚ¾²Ö¹×´Ì¬£®ÈôÄãÊÇС×éÖеÄһλ³ÉÔ±£¬ÒªÍê³É¸ÃÏîʵÑ飬Ôò£º
£¨1£©ÄãÈÏΪ»¹ÐèÒªµÄʵÑéÆ÷²ÄÓÐ__________________£®
£¨2£©ÊµÑéʱΪÁ˱£Ö¤»¬¿éÊܵ½µÄºÏÁ¦ÓëɳºÍɳͰµÄ×ÜÖØÁ¦´óС»ù±¾ÏàµÈ£¬É³ºÍɳͰµÄ×ÜÖÊÁ¿Ó¦Âú×ãµÄʵÑéÌõ¼þÊÇ____________________________£¬ÊµÑéʱÊ×ÏÈÒª×öµÄ²½ÖèÊÇ________________________________________£®
£¨3£©ÔÚ£¨2£©µÄ»ù´¡ÉÏ£¬Ä³Í¬Ñ§ÓÃÌìƽ³ÆÁ¿»¬¿éµÄÖÊÁ¿M£®ÍùɳͰÖÐ×°ÈëÊÊÁ¿µÄϸɳ£¬ÓÃÌìƽ³Æ³ö´ËʱɳºÍɳͰµÄ×ÜÖÊÁ¿m£®ÈÃɳͰ´ø¶¯»¬¿é¼ÓËÙÔ˶¯£¬Óôòµã¼ÆʱÆ÷¼Ç¼ÆäÔ˶¯Çé¿ö£¬ÔÚ´òµã¼ÆʱÆ÷´ò³öµÄÖ½´øÉÏÈ¡Á½µã£¬²â³öÕâÁ½µãµÄ¼ä¾àLºÍÕâÁ½µãµÄËٶȴóСv1Óëv2£¨v1< v2£©£®Ôò±¾ÊµÑé×îÖÕÒªÑéÖ¤µÄÊýѧ±í´ïʽΪ______________________£¨ÓÃÌâÖеÄ×Öĸ±íʾʵÑéÖвâÁ¿µÃµ½µÄÎïÀíÁ¿£©£®
²é¿´´ð°¸ºÍ½âÎö>>
°Ù¶ÈÖÂÐÅ - Á·Ï°²áÁбí - ÊÔÌâÁбí
ºþ±±Ê¡»¥ÁªÍøÎ¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨Æ½Ì¨ | ÍøÉÏÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | µçÐÅթƾٱ¨×¨Çø | ÉæÀúÊ·ÐéÎÞÖ÷ÒåÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | ÉæÆóÇÖȨ¾Ù±¨×¨Çø
Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com