ÌâÄ¿ÄÚÈÝ
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120339457629.gif)
ÖÊÁ¿Îª0.4kgµÄСÎïÌå¹Ì¶¨ÔÚÖ±°ôµÄÒ»¶Ë£¬°ô³¤Îª1.0m£¬£¬ÆäÖØÁ¦²»¼Æ£¬Ê¹ÆäÐγÉÒ»¸ö°Ú£¬¸ÃÎïÌå±»ÍÆÏòÒ»²àÖ±µ½°ôÓëÊúÖ±Ïß³É53¡ã½Ç£®ÊÔÎÊ£º(1)СÎïÌåÓ¦ÒÔ¶à´óµÄÇÐÏòËÙÂÊVA´ÓAµã³ö·¢£¬²ÅÄÜ´ïµ½×î¸ßµãCʱ¾ßÓÐÇÐÏòËÙÂÊ3m/s?(2)СÎïÌåÒÔËÙ¶ÈVA´ÓAµã³ö·¢Ê±£¬Í¨¹ý×îµÍµãBʱµÄËÙÂÊÊǶà´ó? (3)ÈôСÎïÌåÒÔ(1)ÖеÄËÙÂÊVA´ÓAµã³ö·¢£¬µ«·½ÏòÈ´Ïà·´£¬Ëüµ½´ïCµãµÄËÙÂÊÊǶàÉÙ?(4)ÈôÒÔͬÑù³¤µÄÉþ×Ó´úÌæÖ±°ô£¬Ð¡ÎïÌåÈÔÒÔ(1)ÖеÄÌõ¼þ³ö·¢£¬µ½´ïijһµãDʱÉþ×ÓÖеÄÕÅÁ¦ÎªÁã?(5)ÔÚDµãʱµÄËÙÂÊÊǶàÉÙ?(6)¹ýDµãºóСÎïÌåµÄÔ˶¯Çé¿ö½«ÈçºÎ?
£¨1£©4.1m/s £¨2£©5m/s (3)3m/s(4)Dµãµ½Ô²ÐĵÄÁ¬ÏßÓëÊúÖ±ÏߵļнÇΪ14.80
(5)3.11m/s (6)СÎïÌ彫ÒÔ3.11m/sµÄ³õËÙ¶ÈÓëƽÃæ³É14.80µÄ¼Ð½Ç×öбÅ×Ô˶¯
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241203396441453.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082412033975430970.jpg)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824120339785334.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241203398002165.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿