Question

6£®Äþ²¨µ½º¼Öݶ¯³µD656´Î£¬´ÓÄþ²¨6£º30·Ö³ö·¢ÓÚ7£º47·Öµ½º¼Öݶ«Õ¾£¬Í¾Öо­Í£ÁËÓàÒ¦±±£¬ÉÏÓݱ±£¬ÉÜÐ˱±Õ¾£¬¾ßÌåʱ¼äÈç±í£¬ÇëÄã¼ÆË㣨±£Áô1λСÊý£©

1	Äþ²¨	--
2	ÓàÒ¦±±	06£º53
3	ÉÏÓݱ±	07£º09
4	ÉÜÐ˱±	07£º24
5	º¼Öݶ«	07£º47

£¨1£©Äþ²¨ÄÏÕ¾µ½º¼Öݶ«Õ¾µÄÌú·Àï³ÌÊÇ160¹«ÀÄþ²¨µ½º¼ÖݵÄƽ¾ùËÙ¶ÈÊǶàÉÙm/s£¿
£¨2£©ÔÚ¶¯³µÉÏ£¬Äã¿´µ½³µÏáÀïÏÔʾµÄËÙ¶ÈΪ305km/h£¬±íʾÕâʱ¿Ì¶¯³µµÄËٶȣ¬¼´¶àÉÙm/s£¿
£¨3£©ÇëÄã·ÖÎö£¨1£©£¨2£©ËٶȵÄÇø±ð£®

Answer 1

·ÖÎö £¨1£©ÒÑÖªÄþ²¨µ½º¼ÖݵÄʱ¼äÒÔ¼°Â·³Ì£»ÀûÓÃv=$\frac{s}{t}$¿ÉÇóµÃÁгµÓÉÄþ²¨µ½º¼ÖݵÄƽ¾ùËٶȣ»
£¨2£©1m/s=3.6km/h£¬¾Ý´Ë½øÐе¥Î»»»Ë㣻
£¨3£©¸ù¾Ýƽ¾ùËٶȺÍ˲ʱËٶȽøÐзÖÎö£®

½â´ð ½â£º
£¨1£©ÁгµÓÉÄþ²¨µ½º¼ÖÝÈ«³ÌµÄʱ¼ät=1h17min¡Ö1.28h£¬Â·³Ìs=160km£¬
ÁгµÓÉÄþ²¨µ½º¼ÖݵÄƽ¾ùËÙ¶ÈΪv=$\frac{s}{t}$=$\frac{160km}{1.28h}$=125km/h¡Ö34.7m/s£»
£¨2£©305km/h=305¡Á$\frac{1}{3.6}$m/s¡Ö84.7m/s£»
£¨3£©£¨1£©ÖеÄËÙ¶ÈΪƽ¾ùËٶȣ¬£¨2£©ÖеÄËÙ¶ÈΪ˲ʱËٶȣ®
´ð£º
£¨1£©Äþ²¨µ½º¼ÖݵÄƽ¾ùËÙ¶ÈÊǶàÉÙ34.7m/s£»
£¨2£©ÔÚ¶¯³µÉÏ£¬¿´µ½³µÏáÀïÏÔʾµÄËÙ¶ÈΪ305km/h£¬±íʾÕâʱ¿Ì¶¯³µµÄËÙ¶ÈΪ84.7m/s£»
£¨3£©£¨1£©ÖеÄËÙ¶ÈΪƽ¾ùËٶȣ¬£¨2£©ÖеÄËÙ¶ÈΪ˲ʱËٶȣ®

µãÆÀ ±¾Ì⿼²éÁËÇó·³ÌÓëÔ˶¯Ê±¼äÎÊÌ⣬ӦÓÃËٶȹ«Ê½µÄ±äÐι«Ê½¼´¿ÉÕýÈ·½âÌ⣮½â´ð´ËÌâµÄ¹Ø¼üÊÇ´Ó±íÖÐÌá³öÓÐÓõÄÐÅÏ¢£®