ÌâÄ¿ÄÚÈÝ
£¨16·Ö£©ÈçͼËùʾ£¬ÔÚÇã½Ç¦È£½30ºµÄбÃæÉÏ·ÅÖÃÒ»¶Î°¼²ÛB£¬BÓëбÃæ¼äµÄ¶¯Ä¦²ÁÒòÊý¦Ì£½
£¬²ÛÄÚ¿¿½üÓÒ²à±Ú´¦ÓÐһСÇòA£¬Ëüµ½°¼²ÛÄÚ×ó±Ú²àµÄ¾àÀëd£½0.10m£®A¡¢BµÄÖÊÁ¿¶¼Îªm=2.0kg£¬BÓëбÃæ¼äµÄ×î´ó¾²Ä¦²ÁÁ¦¿ÉÈÏΪµÈÓÚ»¬¶¯Ä¦²ÁÁ¦£¬²»¼ÆA¡¢BÖ®¼äµÄĦ²Á£¬Ð±Ãæ×ã¹»³¤£®ÏÖͬʱÓɾ²Ö¹ÊÍ·ÅA¡¢B£¬¾¹ýÒ»¶Îʱ¼ä£¬AÓëBµÄ²à±Ú·¢ÉúÅöײ£¬Åöײ¹ý³Ì²»Ëðʧ»úеÄÜ£¬Åöײʱ¼ä¼«¶Ì£®È¡ÖØÁ¦¼ÓËÙ¶Èg=10m/s2£®Çó£º
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241602424973103.jpg)
£¨1£©AÓëBµÄ×ó²à±ÚµÚÒ»´Î·¢ÉúÅöײºó˲¼äA¡¢BµÄËٶȣ®
£¨2£©ÔÚAÓëBµÄ×ó²à±Ú·¢ÉúµÚÒ»´ÎÅöײºóµ½µÚ¶þ´ÎÅöײǰµÄÕâ¶Îʱ¼äÄÚ£¬AÓëBµÄ×ó²à±ÚµÄ¾àÀë×î´ó¿É´ïµ½¶àÉÙ£¿
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160242356462.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241602424973103.jpg)
£¨1£©AÓëBµÄ×ó²à±ÚµÚÒ»´Î·¢ÉúÅöײºó˲¼äA¡¢BµÄËٶȣ®
£¨2£©ÔÚAÓëBµÄ×ó²à±Ú·¢ÉúµÚÒ»´ÎÅöײºóµ½µÚ¶þ´ÎÅöײǰµÄÕâ¶Îʱ¼äÄÚ£¬AÓëBµÄ×ó²à±ÚµÄ¾àÀë×î´ó¿É´ïµ½¶àÉÙ£¿
£¨1£©A¡¢BµÄËٶȷֱðΪ
0£¬
1.0 m/s£¨·½ÏòÑØбÃæÏòÏ£©£¨2£©AÓëBµÄ×ó²à±ÚµÄ¾àÀë×î´ó¿É´ïµ½0.10m
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160242606346.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160242793373.png)
ÊÔÌâ·ÖÎö£º£¨1£©AÔÚ°¼²ÛÄÚ£¬BÊܵ½µÄ»¬¶¯Ä¦²ÁÁ¦
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160243012803.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160243261724.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160243355459.png)
ÊÍ·ÅAºó£¬A×öÔȼÓËÙÔ˶¯£¬ÓÉÅ£¶Ù¶¨ÂɺÍÔ˶¯Ñ§¹æÂɵãº
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160243760723.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160244041620.png)
½âµÃAµÄ¼ÓËٶȺÍÅöײǰµÄËٶȷֱðΪ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160244166336.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160244353322.png)
A¡¢B·¢ÉúÅöײ£¬¶¯Á¿Êغã
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160244509613.png)
Åöײ¹ý³Ì²»Ëðʧ»úеÄÜ£¬µÃ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160244743915.png)
½âµÃA¡¢BµÄËٶȷֱðΪ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160242606346.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160242793373.png)
£¨2£©A¡¢BµÚÒ»´ÎÅöײºó£¬B×öÔÈËÙÔ˶¯
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160245196511.png)
A×öÔȼÓËÙÔ˶¯£¬¼ÓËÙ¶ÈÈÔΪa1
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160245305659.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160245539518.png)
¾¹ýʱ¼ät1£¬AµÄËÙ¶ÈÓëBÏàµÈ£¬AÓëBµÄ×ó²à±Ú¾àÀë´ïµ½×î´ó£¬¼´
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160245757532.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160245944444.png)
´úÈëÊý¾Ý½âµÃAÓëB×ó²à±ÚµÄ¾àÀë
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160246163275.png)
ÒòΪ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824160246381401.png)
Òò´ËAÓëBµÄ×ó²à±ÚµÄ¾àÀë×î´ó¿É´ïµ½0.10m¡£ £¨2·Ö£©
µãÆÀ£º±¾ÌâÄѶÈÖеȣ¬Ã÷È·ÌâÄ¿Ëù¸øµÄÅöºóËÙ¶ÈÏàͬµÄÌõ¼þ£¬Í¨¹ý·ÖÎöÊÜÁ¦ºÍ×ö¹¦Çé¿öÅжÏÔ˶¯ºÍÄÜÁ¿±ä»¯Çé¿ö£¬ÅжϳöËÙ¶ÈÏàͬÊÇÁ½Õß¾àÀë×î´óµÄÁÙ½çÌõ¼þÊDZ¾ÌâÇó½âµÄ¹Ø¼ü
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿