ÈçͼËùʾ£¬Á½¸öˮƽÏà¶Ô·ÅÖõÄÆø¸×ÓɹܵÀÏàͨ£¬ÇáÖÊ»îÈûa¡¢bÓøÖÐÔÇá¸Ë¹ÌÁ¬£¬¿ÉÔÚÆø¸×ÄÚÎÞĦ²ÁµØÒƶ¯£¬Á½»îÈûÃæ»ý·Ö±ðΪSaºÍSb£¬ÇÒSa£¼Sb¡£¸×ÄÚ¼°¹ÜÖзâÓÐÒ»¶¨ÖÊÁ¿µÄÆøÌ壬Õû¸öϵͳ´¦ÓÚƽºâ״̬£¬´óÆøѹǿ²»±ä¡£ÏÖÁî¸×ÄÚÆøÌåµÄζȻºÂýÉý¸ßÒ»µã£¬ÔòϵͳÔٴδﵽƽºâ״̬ʱ£¨     £©

A£®»îÈûÏò×óÒƶ¯ÁËÒ»µã£¬¸×ÄÚÆøÌåѹǿ²»±ä

B£®»îÈûÏòÓÒÒƶ¯ÁËÒ»µã£¬¸×ÄÚÆøÌåѹǿÔö´ó

C£®»îÈûÏò×óÒƶ¯ÁËÒ»µã£¬¸×ÄÚÆøÌåѹǿÔö´ó

D£®»îÈûµÄλÖÃûÓиı䣬¸×ÄÚÆøÌåѹǿÔö´ó

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2006?¶«³ÇÇøÈýÄ££©µç×ÓËù´øµçºÉÁ¿×îÔçÊÇÓÉÃÀ¹ú¿Æѧ¼ÒÃÜÁ¢¸ùËù×öµÄÓ͵ÎʵÑé²âµÃµÄ£®ÃÜÁ¢¸ùÓ͵ÎʵÑéµÄÔ­ÀíÈçͼËùʾ£¬Á½¿éˮƽ·ÅÖõÄƽÐнðÊô°åÓëµçÔ´ÏàÁ¬½Ó£¬Ê¹ÉÏ°å´øÕýµç£¬Ï°å´ø¸ºµç£¬Ó͵δÓÅçÎíÆ÷Åç³öºó£¬¾­¹ýÉÏÃæ½ðÊô°åÖмäµÄС¿×£¬Âäµ½Á½°åÖ®¼äµÄÔÈÇ¿µç³¡ÖУ¬ÔÚÇ¿¹âÕÕÉäÏ£¬¹Û²ìÕßͨ¹ýÏÔ΢¾µ¹Û²ìÓ͵εÄÔ˶¯£®´ó¶àÊýÓ͵ÎÔÚ¾­¹ýÅçÎíÆ÷Åç×ìʱÒòĦ²Á¶ø´øµç£¬ÃÜÁ¢¸ùͨ¹ýʵÑé²âµÃÊýǧ¸öÓ͵ÎËù´øµçºÉÁ¿£¬²¢·ÖÎöµÃ³öÕâЩµçºÉÁ¿¶¼µÈÓÚij¸ö×îСµçºÉÁ¿µÄÕûÊý±¶£¬Õâ¸ö×îСµçºÉÁ¿¼´µç×ÓËù´øµçºÉÁ¿£®
´ÓÅçÎíÆ÷Åç³öµÄСÓ͵οÉÒÔÊÓΪÇòÐΣ¬Ð¡Ó͵ÎÔÚ¿ÕÆøÖÐÏÂÂäʱÊܵ½µÄ¿ÕÆø×èÁ¦´óС¸úËüÏÂÂäµÄËÙ¶ÈvµÄ´óС³ÉÕý±È£¬¼´f=6¦Ð¦Çr v£¬Ê½ÖÐrΪÓ͵εİ뾶£¬¦ÇΪճ¶ÈϵÊý£®
£¨1£©ÊµÑéÖÐÏȽ«¿ª¹ØS¶Ï¿ª£¬²â³öСÓ͵ÎÏÂÂäÒ»¶Îʱ¼äºó´ïµ½ÔÈËÙÔ˶¯Ê±µÄËÙ¶Èv1£¬ÒÑÖªÓ͵ÄÃܶÈΪ¦Ñ£¬Õ³¶ÈϵÊýΪ¦Ç£¬¿ÕÆøµÄ¸¡Á¦Ô¶Ð¡ÓÚÖØÁ¦£¬¿ÉÒÔºöÂÔ£¬ÊÔÓÉÒÔÉÏÊý¾Ý¼ÆËãСÓ͵εİ뾶r£®
£¨2£©´ýСÓ͵ÎÏòÏÂÔ˶¯µÄËٶȴﵽv1ºó£¬½«¿ª¹ØS±ÕºÏ£¬Ð¡Ó͵ÎÊܵ糡Á¦×÷Óã¬×îÖÕ´ïµ½ÏòÉÏÔÈËÙÔ˶¯£¬²âµÃÔÈËÙÔ˶¯Ê±µÄËÙ¶Èv1£¬ÒÑÖªÁ½½ðÊô°å¼äµÄ¾àÀëΪd£¬µçѹΪU£¬ÊÔÓÉÒÔÉÏÊý¾Ý¼ÆËãСÓ͵ÎËù´øµÄµçºÉÁ¿£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2013?³¤´ºÄ£Ä⣩ÈçͼËùʾ£¬Á½¸öľ¿éµÄÖÊÁ¿·Ö±ðΪm1=0.2kg¡¢m2=0.6kgÖмäÓÃÇᵯ»ÉÏàÁ¬½Ó·ÅÔڹ⻬µÄˮƽÃæÉÏ£¬ÇÒm1×ó²à¿¿Ò»¹Ì¶¨ÊúÖ±µ²°å£®Ä³Ò»Ë²¼äÇû÷ľ¿ém2ʹÆä»ñµÃ0.2m/sµÄˮƽÏò×óËٶȣ¬Ä¾¿ém2Ïò×óѹËõµ¯»ÉÈ»ºó±»µ¯»Éµ¯»Ø£¬µ¯»Øʱ´ø¶¯Ä¾¿ém1Ô˶¯£®Çó£º
¢Ùµ±µ¯»ÉÀ­Éìµ½×ʱ£¬Ä¾¿ém1µÄËٶȶà´ó£¿
¢ÚÔÚÒÔºóµÄÔ˶¯¹ý³ÌÖУ¬Ä¾¿ém1ËٶȵÄ×î´óֵΪ¶àÉÙ£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍøÈçͼËùʾ£¬Á½¸öˮƽ·ÅÖõÄƽÐнðÊô°å£¬ÉÏ°å´ø¸ºµç£¬Ï°å´øµÈÁ¿µÄÕýµç£¬Á½°åµÄµçÊƲîΪU£¬Ò»¸ö´øµçÁ£×ÓPÒÔijһˮƽ³õËٶȽøÈëµç³¡£¬Ôڵ糡ÖзÉÐеÄʱ¼äΪt£¬µç³¡Á¦×ö¹¦ÎªW£¬Í¼ÖÐÐéÏß±íʾ´øµçÁ£×ÓµÄÔ˶¯¹ì¼££»Èô±£³ÖÁ½°åµÄµçÊƲ±ä£¬½«Ï°åÏòÉÏƽÒƵ½Ç¡ºÃÓëͼÖÐÐéÏßÏà½Ó´¥µÄλÖ㬴øµçÁ£×ÓÈÔ´ÓPµãÒ»Ô­À´µÄ³õËٶȽøÈëµç³¡£¬Ôڵ糡ÖзÉÐеÄʱ¼äΪt¡ä£¬µç³¡Á¦×ö¹¦ÎªW¡ä£¬²»¼ÆÁ£×ÓµÄÖØÁ¦£¬ºöÂÔÁ½½ðÊô°å±ßÔµµÄµç³¡£®ÏÂÁÐÎïÀíÁ¿´óСµÄ±È½ÏÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A¡¢t¡ä=tB¡¢t¡ä£¼tC¡¢W¡ä£¼WD¡¢W¡ä£¾W

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

µç×ÓËù´øµçºÉÁ¿×îÔçÊÇÓÉÃÀ¹ú¿Æѧ¼ÒÃÜÁ¢¸ùËù×öµÄÓ͵ÎʵÑé²âµÃµÄ¡£ÃÜÁ¢¸ùÓ͵ÎʵÑéµÄÔ­ÀíÈçͼËùʾ£¬Á½¿éˮƽ·ÅÖõÄƽÐнðÊô°åÓëµçÔ´ÏàÁ¬½Ó£¬Ê¹ÉÏ°å´øÕýµç£¬Ï°å´ø¸ºµç£¬Ó͵δÓÅçÎíÆ÷Åç³öºó£¬¾­¹ýÉÏÃæ½ðÊô°åÖмäµÄС¿×£¬Âäµ½Á½°åÖ®¼äµÄÔÈÇ¿µç³¡ÖУ¬ÔÚÇ¿¹âÕÕÉäÏ£¬¹Û²ìÕßͨ¹ýÏÔ΢¾µ¹Û²ìÓ͵εÄÔ˶¯¡£´ó¶àÊýÓ͵ÎÔÚ¾­¹ýÅçÎíÆ÷Åç×ìʱÒòĦ²Á¶ø´øµç£¬ÃÜÁ¢¸ùͨ¹ýʵÑé²âµÃÊýǧ¸öÓ͵ÎËù´øµçºÉÁ¿£¬²¢·ÖÎöµÃ³öÕâЩµçºÉÁ¿¶¼µÈÓÚij¸ö×îСµçºÉÁ¿µÄÕûÊý±¶£¬Õâ¸ö×îСµçºÉÁ¿¼´µç×ÓËù´øµÄµçºÉÁ¿¡£

 
           ´ÓÅçÎíÅç³öµÄСÓ͵οÉÒÔÊÓΪÇòÐΣ¬Ð¡Ó͵ÎÔÚ¿ÕÆøÖÐÏÂÂäʱÊܵ½µÄ¿ÕÆø×èÁ¦´óС¸úËüÏÂÂäµÄËٶȵĴóС³ÉÕý±È£¬¼´£¬Ê½ÖÐrΪÓ͵εİ뾶£¬ÎªÕ³¶ÈϵÊý¡£

   £¨1£©ÊµÑéÖÐÏȽ«¿ª¹ØS¶Ï¿ª£¬²â³öСÓ͵ÎÏÂÂäÒ»¶Îʱ¼äºó´ïµ½ÔÈËÙÔ˶¯Ê±µÄËٶȣ¬ÒÑÖªÓ͵ÄÃܶÈΪ£¬Õ³¶ÈϵÊýΪ£¬¿ÕÆøµÄ¸¡Á¦Ô¶Ð¡ÓÚÖØÁ¦£¬¿ÉÒÔºöÂÔ£¬ÊÔÓÉÒÔÉÏÊý¾Ý¼ÆËãСÓ͵εİ뾶r¡£

   £¨2£©´ýСÇòÏòÏÂÔ˶¯µÄËٶȴﵽºó£¬½«¿ª¹ØS±ÕºÏ£¬Ð¡Ó͵ÎÊܵ糡Á¦×÷Óã¬×îÖÕ´ïµ½ÏòÉÏÔÈËÙÔ˶¯£¬²âµÃÔÈËÙÔ˶¯µÄËٶȣ¬ÒÑÖªÁ½½ðÊô°å¼äµÄ¾àÀëΪd£¬µçѹΪU£¬ÊÔÓÉÒÔÉÏÊý¾Ý¼ÆËãСÓ͵ÎËù´øµÄµçºÉÁ¿¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012½ìÈ˽̰æ¸ßÈýÎïÀí´Å³¡¶ÔµçÁ÷µÄ×÷ÓÃרÏîѵÁ· ÌâÐÍ£ºÂÔ

ÈçͼËùʾ£¬Á½¸öÍêÈ«ÏàͬµÄÏßȦÌ×ÔÚһˮƽ¹â»¬¾øÔµÔ²ÖùÉÏ£¬µ«ÄÜ×ÔÓÉÒƶ¯£¬ÈôÁ½ÏßȦÄÚͨ¹ý´óС²»µÈµÄͬÏòµçÁ÷£¬ÔòËüÃǵÄÔ˶¯Çé¿öÊÇ                      (¡¡¡¡)

A£®¶¼ÈÆÔ²Öùת¶¯    

B£®ÒÔ²»µÈµÄ¼ÓËÙ¶ÈÏàÏòÔ˶¯

C£®ÒÔÏàµÈµÄ¼ÓËÙ¶ÈÏàÏòÔ˶¯

D£®ÒÔÏàµÈµÄ¼ÓËÙ¶ÈÏà±³Ô˶¯

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸