£¨08ÄêÔÀÑôÒ»ÖÐÖʼ죩£¨6·Ö£©ÈçͼËùʾ£¬Á½¸öÖÊÁ¿¸÷Ϊm 1 ºÍm 2 µÄСÎï¿éAºÍB£¬·Ö±ðϵÔÚÒ»Ìõ¿ç¹ý¶¨»¬ÂÖµÄÈíÉþÁ½¶Ë£¬ÒÑÖªm 1 £¾ m 2£¬ÏÖÒªÀûÓôË×°ÖÃÑéÖ¤»úеÄÜÊغ㶨ÂÉ¡£

£¨1£©ÈôÑ¡¶¨Îï¿éA´Ó¾²Ö¹¿ªÊ¼ÏÂÂäµÄ¹ý³Ì½øÐвâÁ¿£¬ÔòÐèÒª²âÁ¿µÄÎïÀíÁ¿ÓР         £¨ÔÚ´ðÌ⿨É϶ÔÓ¦ÇøÓòÌîÈëÑ¡ÏîÇ°µÄ±àºÅ£©

¢ÙÎï¿éµÄÖÊÁ¿m 1 ¡¢m 2£»

¢ÚÎï¿éAÏÂÂäµÄ¾àÀë¼°ÏÂÂäÕâ¶Î¾àÀëËùÓõÄʱ¼ä£»

¢ÛÎï¿éBÉÏÉýµÄ¾àÀë¼°ÉÏÉýÕâ¶Î¾àÀëËùÓõÄʱ¼ä£»

¢ÜÉþ×ӵij¤¶È.

£¨2£©ÎªÌá¸ßʵÑé½á¹ûµÄ׼ȷ³Ì¶È£¬Ä³Ð¡×éͬѧ¶Ô´ËʵÑéÌá³öÒÔϽ¨Ò飺

¢ÙÉþµÄÖÊÁ¿ÒªÇ᣺

¢ÚÔÚ¡°ÇáÖÊÉþ¡±µÄÇ°ÌáÏ£¬Éþ×ÓÔ½³¤Ô½ºÃ£»

¢Û¾¡Á¿±£Ö¤Îï¿éÖ»ÑØÊúÖ±·½ÏòÔ˶¯£¬²»ÒªÒ¡»Î£»

¢ÜÁ½¸öÎï¿éµÄÖÊÁ¿Ö®²îÒª¾¡¿ÉÄÜС.

ÒÔÉϽ¨ÒéÖÐȷʵ¶ÔÌá¸ß׼ȷ³Ì¶ÈÓÐ×÷ÓõÄÊÇ               ¡££¨ÔÚ´ðÌ⿨É϶ÔÓ¦ÇøÓòÌîÈëÑ¡ÏîÇ°µÄ±àºÅ£©

£¨3£©Ð´³öÒ»ÌõÉÏÃæûÓÐÌáµ½µÄÌá¸ßʵÑé½á¹û׼ȷ³Ì¶ÈÓÐÒæµÄ½¨Ò飺               

                                                               ¡£

´ð°¸£º£¨1£©¢Ù¢Ú»ò¢Ù¢Û£»£¨2£©¢Ù¢Û£»£¨3£©ÀýÈ磺¡°¶Ôͬһ¸ß¶È½øÐжà´Î²âÁ¿È¡Æ½¾ùÖµ¡±£»¡°Ñ¡È¡ÊÜÁ¦ºóÏà¶ÔÉ쳤¾¡Á¿Ð¡µÄÉþ¡±£»µÈµÈ¡£

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨08ÄêÔÀÑôÒ»ÖÐÖʼ죩 (6·Ö) һˮƽ·ÅÖõÄÔ²ÅÌÈƹýÆäÔ²ÐĵÄÊúÖ±ÖáÔÈËÙת¶¯¡£Å̱ßÔµÉϹ̶¨Ò»ÊúÖ±µÄµ²¹âƬ¡£ÅÌת¶¯Ê±µ²¹âƬ´ÓÒ»¹âµçÊý×Ö¼ÆʱÆ÷µÄ¹âµçÃŵÄÏÁ·ìÖо­¹ý£¬Èçͼ1 Ëùʾ¡£Í¼2Ϊ¹âµçÊý×Ö¼ÆʱÆ÷µÄʾÒâͼ¡£¸ß¿¼×ÊÔ´Íø°æȨËùÓйâÔ´AÖÐÉä³öµÄ¹â¿ÉÕÕµ½BÖеĽÓÊÕÆ÷ÉÏ¡£ÈôA¡¢B¼äµÄ¹â·±»Õڶϣ¬ÏÔʾÆ÷CÉÏ¿ÉÏÔʾ³ö¹âÏß±»ÕÚסµÄʱ¼ä¡£¸ß¿¼×ÊÔ´Íø°æȨËùÓÐ

µ²¹âƬµÄ¿í¶ÈÓÃÂÝÐý²â΢Æ÷²âµÃ£¬½á¹ûÈçͼ3Ëùʾ¡£Ô²ÅÌÖ±¾¶ÓÃÓα꿨³ß²âµÃ£¬½á¹ûÈçͼ4Ëùʾ¡£ÓÉͼ¿ÉÖª£¬

£¨l£©µ²¹âƬµÄ¿í¶ÈΪ_____________mm¡£

£¨2£©Ô²Å̵ÄÖ±¾¶Îª_______________cm¡£

£¨3£©Èô¹âµçÊý×Ö¼ÆʱÆ÷ËùÏÔʾµÄʱ¼äΪ50.0 ms£¬ÔòÔ²ÅÌת¶¯µÄ½ÇËÙ¶ÈΪ_______»¡¶È/Ã루±£Áô3λÓÐЧÊý×Ö£©¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨08ÄêÔÀÑôÒ»ÖÐÖʼ죩(6·Ö)ÀûÓÃÏÂͼËùʾµÄ×°Öã¬ÔÚ×ö¡°²âÁ¿ÖØÁ¦¼ÓËٶȡ± µÄʵÑéÖУ¬µÃµ½Á˼¸Ìõ½ÏΪÀíÏëµÄÖ½´ø£®ÒÑ֪ÿÌõÖ½´øÉÏÿ5¸öµãÈ¡Ò»¸ö¼ÆÊýµã£¬¼´Á½¼ÆÊýµãÖ®¼äµÄʱ¼ä¼ä¸ôΪO.1 s£¬ÒÀ´òµãÏȺó±àΪO£¬1£¬2£¬3£¬4£¬¡­¡­ÓÉÓÚ²»Ð¡ÐÄ£¬Ö½´ø¶¼±»Ëº¶ÏÁË£¬ÈçͼËùʾ£¬¸ù¾Ý¸ø³öµÄA¡¢B¡¢C¡¢DËĶÎÖ½´ø»Ø´ð£º

 (1)ÔÚB¡¢C¡¢DÈý¶ÎÖ½´øÖÐÑ¡³ö´ÓÖ½´øAÉÏ˺ϵÄÄǶÎÓ¦¸ÃÊÇ       (Ìî×Öĸ)£®

(2)Ö½´øAÉÏ£¬´òµã1ʱÖØÎïµÄËÙ¶ÈÊÇ       m£¯s(½á¹û±£ÁôÈýλÓÐЧÊý×Ö)£®

(3)µ±µØµÄÖØÁ¦¼ÓËٶȴóСÊÇ       m£¯s2(½á¹û±£ÁôÈýλÓÐЧÊý×Ö)£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨08ÄêÔÀÑôÒ»ÖÐÖʼ죩ÈçͼËùʾ£¬Ò»¸öСÎïÌåÑع⻬бÃæÓÉAµãÉÏ·½¾²Ö¹¿ªÊ¼¼ÓËÙÏ»¬£¬ÔÚËüͨ¹ýµÄ·³ÌÖÐÈ¡AE²¢·Ö³ÉÏàµÈµÄ4¶Î£¬vB±íʾÎïÌåͨ¹ýBµãµÄ˲ʱËٶȣ¬v±íʾAE¶ÎµÄƽ¾ùËٶȣ¬ÔòvBÓëvµÄ¹ØϵÊÇ

¸ß¿¼×ÊÔ´Íø°æȨËùÓи߿¼×ÊÔ´Íø°æȨËùÓÐ

A£®vB < v

B£®vB = v

C£®vB > v

D£®ÒÔÉÏÈýÖÖ¹Øϵ¶¼ÓпÉÄÜ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨08ÄêÔÀÑôÒ»ÖÐÖʼ죩ÈçͼËùʾ£¬´Ö²ÚµÄбÃæABÓë¹â»¬µÄˮƽÃæÏàÁ¬½Ó£¬»¬¿éÑØˮƽÃæÒÔËÙ¶ÈÔ˶¯¡£É軬¿éÔ˶¯µ½AµãµÄʱ¿ÌΪt =0£¬¾àAµãµÄˮƽ¾àÀëΪx£¬Ë®Æ½ËÙ¶ÈΪ¡£ÓÉÓÚ²»Í¬£¬»¬¿é´ÓAµãµ½BµãµÄ¼¸ÖÖ¿ÉÄܵÄÔ˶¯Í¼ÏóÈçÏÂÁÐÑ¡ÏîËùʾ£¬ÆäÖбíʾ»¬¿é¿Ë·þĦ²ÁÁ¦×ö¹¦×î´óµÄÊÇ

   

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸