ɳ³¾±©ÌìÆø»áÑÏÖØÓ°Ï콻ͨ£®ÓÐÒ»Á¾¿¨³µÒÔ54 km/hµÄËÙ¶ÈÔÈËÙÐÐÊ»£¬Ë¾»úͻȻģºý¿´µ½ÕýÇ°·½Ê®×Ö·¿ÚÒ»¸öÀÏÈ˵øµ¹(ÈôûÓÐÈË·öÆðËû)£¬¸Ã˾»úɲ³µµÄ·´Ó¦Ê±¼äΪ0.6 s£¬É²³µºó¿¨³µÔȼõËÙÇ°½ø£¬×îºóÍ£ÔÚÀÏÈËÇ°1.5 m´¦£¬±ÜÃâÁËÒ»³¡Ê¹ʣ®ÒÑ֪ɲ³µ¹ý³ÌÖп¨³µ¼ÓËٶȴóСΪ5 m/s2£¬Ôò


  1. A.
    ˾»ú·¢ÏÖÇé¿öºó£¬¿¨³µ¾­¹ý3 sÍ£ÏÂ
  2. B.
    ˾»ú·¢ÏÖÇé¿öʱ£¬¿¨³µÓë¸ÃÀÏÈ˵ľàÀëΪ33 m
  3. C.
    ´Ó˾»ú·¢ÏÖÇé¿öµ½Í£ÏÂÀ´¹ý³ÌÖп¨³µµÄƽ¾ùËÙ¶ÈΪ11 m/s
  4. D.
    Èô¿¨³µµÄ³õËÙ¶ÈΪ72 km/h£¬ÆäËûÌõ¼þ¶¼²»±ä£¬Ôò¿¨³µ½«×²µ½ÀÏÈË
BD
ÊÔÌâ·ÖÎö£ºÆû³µµÄ³õËÙ¶ÈΪ15m/s£¬ÔòÆû³µÉ²³µºó¾­¹ýÍ£Ö¹£¬ËùÒÔ˾»ú·¢ÏÖÇé¿öºó£¬¿¨³µ¾­¹ý3.6 sͣϣ»Æû³µÔÚ0.6sÄÚ¼°¼õËÙÔ˶¯ÄÚµÄλÒÆÖ®ºÍ£¬ËùÒÔ˾»ú·¢ÏÖÇé¿öʱ£¬¿¨³µÓë¸ÃÀÏÈ˵ľàÀëΪ31.5m+1.5m="33" m; ´Ó˾»ú·¢ÏÖÇé¿öµ½Í£ÏÂÀ´¹ý³ÌÖп¨³µµÄƽ¾ùËÙ¶ÈΪ£»Èô¿¨³µµÄ³õËÙ¶ÈΪ72 km/h=20m/s£¬ÆäËûÌõ¼þ¶¼²»±ä£¬Ôò¿¨³µÍ£ÏÂÀ´µÄλÒÆΪËùÒÔ½«×²µ½ÀÏÈË¡£Ñ¡ÏîBDÕýÈ·¡£
¿¼µã£ºÔȱäËÙÔ˶¯µÄ¹æÂÉ¡£
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ɳ³¾±©ÌìÆø»áÑÏÖØÓ°Ï콻ͨ£®ÓÐÒ»Á¾¿¨³µÒÔ54km/hµÄËÙ¶ÈÔÈËÙÐÐÊ»£¬Ë¾»úͻȻģºý¿´µ½Ç°·½Ê®×Ö·¿ÚÒ»¸öÆï×ÔÐгµµÄÈËͻȻµøµ¹£¬¸Ã˾»úɲ³µµÄ·´Ó¦Ê±¼äΪO.6s£¬É²³µºó¿¨³µÔȼõËÙÇ°½ø£¬×îºóÍ£ÔÚÆï³µÕßÇ°1.5m´¦£¬±ÜÃâÁËÒ»³¡°²È«Ê¹ʣ®ÒÑ֪ɲ³µ¹ý³ÌÖп¨³µ¼ÓËٶȴóСΪ5m/s2£¬Çó£º
£¨1£©Ë¾»ú·¢ÏÖÇé¿öºó£¬¿¨³µ¾­¹ý¶à³¤Ê±¼äͣϣ»
£¨2£©Ë¾»ú·¢ÏÖÇé¿öʱ£¬¿¨³µÓë¸Ã×ÔÐгµµÄ¾àÀ룮

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ɳ³¾±©ÌìÆø»áÑÏÖØÓ°Ï콻ͨ£®ÓÐÒ»Á¾¿¨³µÒÔ54km/hµÄËÙ¶ÈÔÈËÙÐÐÊ»£¬Ë¾»úͻȻģºý¿´µ½ÕýÇ°·½Ê®×Ö·¿ÚÒ»¸öÀÏÈ˵øµ¹£¨ÈôûÓÐÈË·öÆðËû£©£¬¸Ã˾»úɲ³µµÄ·´Ó¦Ê±¼äΪ0.6s£¬É²³µºó¿¨³µÔȼõËÙÇ°½ø£¬×îºóÍ£ÔÚÀÏÈËÇ°1.5m´¦£¬±ÜÃâÁËÒ»³¡Ê¹ʣ®ÒÑ֪ɲ³µ¹ý³ÌÖп¨³µ¼ÓËٶȴóСΪ5m/s2£¬Ôò£¨¡¡¡¡£©
A¡¢Ë¾»ú·¢ÏÖÇé¿öºó£¬¿¨³µ¾­¹ý3 sÍ£ÏÂB¡¢Ë¾»ú·¢ÏÖÇé¿öʱ£¬¿¨³µÓë¸ÃÀÏÈ˵ľàÀëΪ33mC¡¢´Ó˾»ú·¢ÏÖÇé¿öµ½Í£ÏÂÀ´¹ý³ÌÖп¨³µµÄƽ¾ùËÙ¶ÈΪ11m/sD¡¢Èô¿¨³µµÄ³õËÙ¶ÈΪ72km/h£¬ÆäËûÌõ¼þ¶¼²»±ä£¬Ôò¿¨³µ½«×²µ½ÀÏÈË

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ɳ³¾±©ÌìÆø»áÑÏÖØÓ°Ï콻ͨ¡£ÓÐÒ»Á¾¿¨³µÒÔ54 km/hµÄËÙ¶ÈÔÈËÙÐÐÊ»£¬Ë¾»úͻȻģºý¿´µ½Ç°·½Ê®×Ö·¿ÚÒ»¸öÆï×ÔÐгµµÄÈËͻȻµøµ¹£¬¸Ã˾»úɲ³µµÄ·´Ó¦Ê±¼äΪO.6 s£¬É²³µºó¿¨³µÔȼõËÙÇ°½ø£¬×îºóÍ£ÔÚÆï³µÕßÇ°1.5 m´¦£¬±ÜÃâÁËÒ»³¡°²È«Ê¹ʡ£ÒÑ֪ɲ³µ¹ý³ÌÖп¨³µ¼ÓËٶȴóСΪ5 m/s2£¬Çó£º

1.˾»ú·¢ÏÖÇé¿öºó£¬¿¨³µ¾­¹ý¶à³¤Ê±¼äͣϣ»

2.˾»ú·¢ÏÖÇé¿öʱ£¬¿¨³µÓë¸Ã×ÔÐгµµÄ¾àÀë¡£

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012-2013ѧÄ꼪ÁÖÊ¡¼ªÁÖÊÐÆÕͨÖÐѧ¸ßÒ»ÉÏѧÆÚÆÚÄ©¿¼ÊÔÎïÀíÊÔ¾í£¨´ø½âÎö£© ÌâÐÍ£º¼ÆËãÌâ

ɳ³¾±©ÌìÆø»áÑÏÖØÓ°Ï콻ͨ¡£ÓÐÒ»Á¾¿¨³µÒÔ54km/hµÄËÙ¶ÈÔÈËÙÐÐÊ»£¬Ë¾»úͻȻģºý¿´µ½Ç°·½Ê®×Ö·¿ÚÒ»¸öÆï×ÔÐгµµÄÈËͻȻµøµ¹,¸Ã˾»úɲ³µµÄ·´Ó¦Ê±¼äΪ0.6s£¬É²³µºó¿¨³µÔȼõËÙÇ°½ø£¬×îºóÍ£ÔÚÆï³µÕßÇ°1.5m´¦£¬±ÜÃâÁËÒ»³¡°²È«Ê¹ʡ£ÒÑ֪ɲ³µ¹ý³ÌÖп¨³µ¼ÓËٶȴóСΪ5m/s2£¬Çó£º
£¨1£©Ë¾»ú·¢ÏÖÇé¿öºó£¬¿¨³µ¾­¹ý¶à³¤Ê±¼äͣϣ»
£¨2£©Ë¾»ú·¢ÏÖÇé¿öʱ£¬¿¨³µÓë¸Ã×ÔÐгµµÄ¾àÀë¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2014½ìºÓ±±Ê¡±£¶¨Êи߶þÏÂѧÆÚµÚÈý´ÎÔ¿¼ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ɳ³¾±©ÌìÆø»áÑÏÖØÓ°Ï콻ͨ£®ÓÐÒ»Á¾¿¨³µÒÔ54 km/hµÄËÙ¶ÈÔÈËÙÐÐÊ»£¬Ë¾»úͻȻģºý¿´µ½ÕýÇ°·½Ê®×Ö·¿ÚÒ»¸öÀÏÈ˵øµ¹(ÈôûÓÐÈË·öÆðËû)£¬¸Ã˾»úɲ³µµÄ·´Ó¦Ê±¼äΪ0.6 s£¬É²³µºó¿¨³µÔȼõËÙÇ°½ø£¬×îºóÍ£ÔÚÀÏÈËÇ°1.5 m´¦£¬±ÜÃâÁËÒ»³¡Ê¹ʣ®ÒÑ֪ɲ³µ¹ý³ÌÖп¨³µ¼ÓËٶȴóСΪ5 m/s2£¬Ôò

A£®Ë¾»ú·¢ÏÖÇé¿öºó£¬¿¨³µ¾­¹ý3 sÍ£ÏÂ

B£®Ë¾»ú·¢ÏÖÇé¿öʱ£¬¿¨³µÓë¸ÃÀÏÈ˵ľàÀëΪ33 m

C£®´Ó˾»ú·¢ÏÖÇé¿öµ½Í£ÏÂÀ´¹ý³ÌÖп¨³µµÄƽ¾ùËÙ¶ÈΪ11 m/s

D£®Èô¿¨³µµÄ³õËÙ¶ÈΪ72 km/h£¬ÆäËûÌõ¼þ¶¼²»±ä£¬Ôò¿¨³µ½«×²µ½ÀÏÈË

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸