ÌâÄ¿ÄÚÈÝ
£¨2013½ËÕÃûУÖʼ죩´«ËÍ´øÓëˮƽÃæ¼Ð½ÇΪ37¡ã£¬Æ¤´øÒÔ12 m/sµÄËÙÂÊÑØ˳ʱÕë·½Ïòת¶¯£¬ÈçͼËùʾ¡£½ñÔÚ´«ËÍ´øÉ϶ËA´¦ÎÞ³õËٶȵطÅÉÏÒ»¸öÖÊÁ¿ÎªmµÄСÎï¿é£¬ËüÓë´«ËÍ´ø¼äµÄ¶¯Ä¦²ÁÒòÊýΪ0£®75£¬Èô´«ËÍ´øAµ½BµÄ³¤¶ÈΪ24 m£¬gÈ¡10 m/s2£¬ÔòСÎï¿é´ÓAÔ˶¯µ½BµÄʱ¼äΪ¶àÉÙ£¿
ÊÔÌâ·ÖÎö£º£¨1£©Îï¿é¸Õ·ÅÉÏ´«ËÍ´øʱ£¬Êܵ½ÖØÁ¦¡¢´«ËÍ´øµÄÖ§³ÖÁ¦ºÍÑØ´«ËÍ´øÏòϵĻ¬¶¯Ä¦²ÁÁ¦£¬¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂÉÇó½â¼ÓËٶȣ®
£¨2£©Îï¿éÏòÏÂ×öÔȼÓËÙÔ˶¯£¬¸ù¾ÝÔ˶¯Ñ§¹«Ê½Çó³ö»õÎïµÄËٶȺʹ«ËÍ´øµÄËÙ¶ÈÏàͬ¾ÀúµÄʱ¼äºÍÏ»¬µÄλÒÆ£®
£¨3£©Îï¿éµÄËٶȺʹ«ËÍ´øµÄËÙ¶ÈÏàͬºó£¬ÒòΪ¶¯Ä¦²ÁÒòÊýΪ0£®75£¬¼ÌÐøÏòÏÂ×öÔÈËÙÔ˶¯£¬Çó³öÏ»¬µÄʱ¼ä£¬×îºóÇó³ö×Üʱ¼ä£®
½â£ºÉèÎï¿é¸Õ·ÅÉÏ´«ËÍ´øʱ¼ÓËÙ¶ÈΪ£¬»õÎïÊÜÁ¦ÈçͼËùʾ£º
¸ù¾ÝÅ£¶ÙµÚ¶þ¶¨ÂɵÃ
ÑØ´«ËÍ´ø·½Ïò£º
´¹Ö±´«ËÍ´ø·½Ïò£º
ÓÖ
ÓÉÒÔÉÏÈýʽµÃ£º ·½ÏòÑØ´«ËÍ´øÏòÏ£®
Îï¿éËٶȴÓ0¼ÓËÙÖÁ´«ËÍ´øËÙ¶Èv=12 m/s£¬ËùÓÃʱ¼äÉèΪt1£¬Î»ÒÆÉèΪx1£¬ÔòÓУº£¬