ÌâÄ¿ÄÚÈÝ
£¨16·Ö£©ÈçͼËùʾ£¬ÖÊÁ¿M="4" kgµÄС³µ·ÅÔÚˮƽ¹â»¬µÄƽÃæÉÏ£¬ÔÚС³µ×ó¶Ë¼ÓһˮƽÍÆÁ¦F=6N£¬µ±Ð¡³µÏòÓÒÔ˶¯µÄËٶȴﵽ2 m/sʱ£¬ÔÚС³µÇ°¶ËÇáÇáµØ·ÅÉÏÒ»¸ö´óС²»¼Æ£¬ÖÊÁ¿Îªm="1" kgµÄСÎï¿é£¬Îï¿éÓëС³µ¼äµÄ¶¯Ä¦²ÁÒòÊý=0.2£¬Ð¡³µ×ã¹»³¤.£¨gÈ¡10m/s2£©£¬Çó
£¨1£©Ð¡Îï¿é·Åºó£¬Ð¡Îï¿é¼°Ð¡³µµÄ¼ÓËٶȸ÷Ϊ¶à´ó£¿
£¨2£©¾¶à³¤Ê±¼äÁ½Õß´ïµ½ÏàͬµÄËٶȣ¿
£¨3£©´ÓСÎï¿é·ÅÉÏС³µ¿ªÊ¼£¬¾¹ýt=3sСÎï¿éͨ¹ýµÄλÒÆ´óСΪ¶àÉÙ£¿
¼û½âÎö
½âÎöÊÔÌâ·ÖÎö£º£¨1£©Îï¿éµÄ¼ÓËÙ¶È £¨2·Ö£©
С³µµÄ¼ÓËٶȣº £¨3·Ö£©
£¨2£©ÓÉ£º £¨3·Ö£©
µÃ£ºt=2s £¨2·Ö£©
£¨3£©ÔÚ¿ªÊ¼2sÄÚСÎï¿éµÄλÒÆ£º £¨1·Ö£©
2sÄ©Ëٶȣº £¨1·Ö£©
ÔÚ½ÓÏÂÀ´µÄ1sÎï¿éÓëС³µÏà¶Ô¾²Ö¹£¬Ò»Æð×ö¼ÓËÙÔ˶¯
ÇÒ¼ÓËÙ¶È: £¨2·Ö£©
Õâ1sÄÚµÄλÒÆ: £¨1·Ö£©
ͨ¹ýµÄ×ÜλÒÆ £¨1·Ö£©
¿¼µã£ºÅ£¶ÙµÚ¶þ¶¨ÂÉ£¬ÔȱäËÙÖ±ÏßÔ˶¯µÄËÙ¶ÈÓëʱ¼äµÄ¹Øϵ£¬ÔȱäËÙÖ±ÏßÔ˶¯µÄλÒÆÓëʱ¼äµÄ¹Øϵ