Question

ÈçͼËùʾ£¬Ò»ÖÊÁ¿Îªm£½1 kgµÄСÎï¿éÇáÇá·ÅÔÚˮƽÔÈËÙÔ˶¯µÄ´«ËÍ´øÉϵÄAµã£¬Ëæ´«ËÍ´øÔ˶¯µ½Bµã£¬Ð¡Îï¿é´ÓCµãÑØÔ²»¡ÇÐÏß½øÈëÊúÖ±¹â»¬µÄ°ëÔ²¹ìµÀÇ¡ÄÜ×öÔ²ÖÜÔ˶¯£®ÒÑÖªÔ²»¡°ë¾¶R£½0£®9m£¬¹ìµÀ×îµÍµãΪD£¬Dµã¾àˮƽÃæµÄ¸ß¶Èh£½0£®8m£®Ð¡Îï¿éÀ뿪DµãºóÇ¡ºÃ´¹Ö±Åö»÷·ÅÔÚˮƽÃæÉÏEµãµÄ¹Ì¶¨Çãбµ²°å£®ÒÑÖªÎï¿éÓë´«ËÍ´ø¼äµÄ¶¯Ä¦²ÁÒòÊý£½0£®3£¬´«ËÍ´øÒÔ5 m£¯sºã¶¨ËÙÂÊ˳ʱÕëת¶¯£¨gÈ¡10 m£¯s²£©£¬ÊÔÇó£º

£¨1£©´«ËÍ´øABÁ½¶ËµÄ¾àÀ룻
£¨2£©Ð¡Îï¿é¾­¹ýDµãʱ¶Ô¹ìµÀµÄѹÁ¦µÄ´óС£»
£¨3£©Çãбµ²°åÓëˮƽÃæ¼äµÄ¼Ð½ÇµÄÕýÇÐÖµ£®

Answer 1

£¨1£©=1£®5m£¨2£©£¨3£©

£¨1£©¶ÔСÎï¿é£¬ÔÚCµãÇ¡ÄÜ×öÔ²ÖÜÔ˶¯£¬ÓÉÅ£¶ÙµÚ¶þ¶¨Âɵ㺠  £¬
Ôò£®¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­£¨2·Ö£©
ÓÉÓÚ£¬Ð¡Îï¿éÔÚ´«ËÍ´øÉÏÒ»Ö±¼ÓËÙ£¬ÔòÓÉAµ½BÓÐ
£¬¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­£¨2·Ö£©

ËùÒÔ´«ËÍ´øABÁ½¶ËµÄ¾àÀë=1£®5m£®¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­£¨2·Ö£©
£¨2£©¶ÔСÎï¿é£¬ÓÉCµ½DÓУ¬¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­£¨2·Ö£©
ÔÚDµãF_N-mg=£¬´úÈëÊý¾Ý½âµÃF_N£½60N£®¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­£¨2·Ö£©
ÓÉÅ£¶ÙµÚÈý¶¨ÂÉ֪СÎï¿é¶Ô¹ìµÀµÄѹÁ¦´óСΪ£®¡­¡­¡­¡­¡­¡­¡­¡­¡­£¨1·Ö£©
£¨3£©Ð¡Îï¿é´ÓDµãÅ׳öºó×öƽÅ×Ô˶¯£¬Ôò£¬
½âµÃt£½0£®4s¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­£¨2·Ö£©
½«Ð¡Îï¿éÔÚEµãµÄËٶȽøÐзֽâµÃ£®¡­¡­¡­¡­£¨2·Ö