ÌâÄ¿ÄÚÈÝ
ÈçͼËùʾΪijһװÖõĸ©ÊÓͼ£¬M¡¢NΪÁ½¸öÊúÖ±·ÅÖõÄƽÐнðÊô°å£¬Ïà¾àΪ0.4 m£¬L1ºÍL2ΪÓëM¡¢NƽÐеÄÁ½¸ù½ðÊôµ¼¹ì£¨Á½µ¼¹ì½Ïϸ£¬ÓëM¡¢NÉϱßÀâ´¦ÓÚͬһˮƽÃ棩,L1ÓëMÒÔ¼°L2ÓëNµÄ¼ä¾à¶¼ÊÇ0. 1 m£¬Á½µ¼¹ìµÄµç×è²»¼Æ£¬ÆäÓҶ˽ÓÓÐR="0." 3¦¸µÄµç×裮ÏÖÓÐÒ»³¤Îª0. 4 m¡¢µç×èΪ0.2¦¸µÄ¾ùÔȽðÊôµ¼Ìå°ôab£¬°ôÉϵÄa¡¢b¡¢c¡¢dËĵã·Ö±ðÓëM¡¢ N¡¢L1¡¢L2½Ó´¥Á¼ºÃ£¬ÇÒ½ðÊô°ôabÓë½ðÊô°åM¡¢NÕý½»£¬Õû¸ö×°Ö÷ÅÔÚÊúÖ±ÏòϵÄÔÈÇ¿´Å³¡ÖУ®½ñÓÐÒ»´øÕýµçÁ£×Ó£¨²»¼ÆÖØÁ¦£©ÒÔv0="7" m/sµÄ³õËÙ¶ÈƽÐÐÓÚ¼«°åˮƽÈëÉ䣮Çóµ±½ðÊô°ôabÏòºÎ·½ÏòÒÔ¶à´óËÙ¶ÈÔ˶¯Ê±£¬¿Éʹ´øµçÁ£×Ó×öÔÈËÙÖ±ÏßÔ˶¯£¿![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241146506356121.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241146506356121.jpg)
½ðÊô°ôabÓ¦ÏòÓÒÔ˶¯£®ÇÒËÙ¶ÈΪ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114650650398.gif)
½ðÊô°ôabÓ¦ÏòÓÒÔ˶¯£®ÉèÔÈÇ¿´Å³¡µÄ´Å¸ÐӦǿ¶ÈΪB£¬½ðÊô°ôµÄÔ˶¯ËÙ¶ÈΪv£®Ôò½ðÊô°ôc¡¢d²¿·ÖµÄ¸ÐÓ¦µç¶¯ÊÆΪ
£¬c¡¢dÁ½µã¼äµÄÄÚ×èÓɵç×趨ÂɿɵÃ
¦¸£¬c¡¢dÁ½µã¼äµÄµçÊƲîΪ
¡£
Á½½ðÊô°åM¡¢N¼äµÄµçÊƲîΪ
£¬
Á½°å¼äµÄµç³¡Ç¿¶ÈΪE="0." 875Bv, Óûʹ´øµçÁ£×Ó×öÔÈËÙÖ±ÏßÔ˶¯£¬Ó¦Ê¹Á£×ÓÊÜÁ¦Æ½ºâ£¬¼´
£¬µÃ
m/s.
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114650666383.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114650681415.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114650681510.gif)
Á½½ðÊô°åM¡¢N¼äµÄµçÊƲîΪ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114650697727.gif)
Á½°å¼äµÄµç³¡Ç¿¶ÈΪE="0." 875Bv, Óûʹ´øµçÁ£×Ó×öÔÈËÙÖ±ÏßÔ˶¯£¬Ó¦Ê¹Á£×ÓÊÜÁ¦Æ½ºâ£¬¼´
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114650728321.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114650728345.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿