ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÈçͼËùʾ£¬ÎïÌåA¡¢Bͨ¹ýϸÉþ¼°ÇáÖʵ¯»ÉÁ¬½ÓÔÚÇỬÂÖÁ½²à£¬ÎïÌåA¡¢BµÄÖÊÁ¿·Ö±ðΪ2m¡¢m£®¿ªÊ¼Ê±Ï¸ÉþÉìÖ±£¬ÓÃÊÖÍÐ×ÅÎïÌåAʹµ¯»É´¦ÓÚÔ³¤ÇÒAÓëµØÃæµÄ¾àÀëΪh£¬ÎïÌåB¾²Ö¹ÔÚµØÃæÉÏ£®·ÅÊÖºóÎïÌåAÏÂÂ䣬ÓëµØÃæ¼´½«½Ó´¥Ê±ËٶȴóСΪv£¬´ËʱÎïÌåB¶ÔµØÃæÇ¡ºÃÎÞѹÁ¦£¬²»¼ÆÒ»ÇÐĦ²Á¼°¿ÕÆø×èÁ¦£¬ÖØÁ¦¼ÓËٶȴóСΪg£¬ÔòÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A. ÎïÌåAÏÂÂä¹ý³ÌÖУ¬ÎïÌåAºÍµ¯»É×é³ÉµÄϵͳ»úеÄÜÊغã
B. µ¯»ÉµÄ¾¢¶ÈϵÊýΪ
C. ÎïÌåA×ŵØʱµÄ¼ÓËٶȴóСΪ
D. ÎïÌåA×ŵØʱµ¯»ÉµÄµ¯ÐÔÊÆÄÜΪmgh-mv2
¡¾´ð°¸¡¿AC
¡¾½âÎö¡¿A¡¢ÓÉÌâÖªµÀ£¬ÎïÌåAÏÂÂä¹ý³ÌÖУ¬BÒ»Ö±¾²Ö¹²»¶¯£¬¶ÔÓÚÎïÌåAºÍµ¯»É×é³ÉµÄϵͳ£¬Ö»ÓÐÖØÁ¦ºÍµ¯Á¦×ö¹¦£¬ÔòÎïÌåAºÍµ¯»É×é³ÉµÄϵͳ»úеÄÜÊغ㣬¹ÊAÕýÈ·£»
B¡¢ÎïÌåB¶ÔµØÃæµÄѹÁ¦Ç¡ºÃΪÁ㣬¹Êµ¯»ÉµÄÀÁ¦Îª£¬¿ªÊ¼Ê±µ¯»É´¦ÓÚÔ³¤£¬Óɺú¿Ë¶¨ÂÉÖª£º £¬µÃµ¯»ÉµÄ¾¢¶ÈϵÊýΪ£¬¹ÊB´íÎó£»
C¡¢ÎïÌåA×ŵØʱ£¬Ï¸Éþ¶ÔAµÄÀÁ¦Ò²µÈÓÚmg£¬¶ÔA£¬¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨Âɵ㬵㬹ÊCÕýÈ·£»
D¡¢ÎïÌåAÓ뵯»Éϵͳ»úеÄÜÊغ㣬ÓУ¬¹Ê£º £¬¹ÊD´íÎó¡£