ÌâÄ¿ÄÚÈÝ
ÈçͼËùʾ£¬²¨Ô´SÔÚt£½0ʱ¿Ì´ÓƽºâλÖÿªÊ¼ÏòÉÏÔ˶¯£¬ÐγÉÏò×óÓÒÁ½²à´«²¥µÄ¼òгºá²¨¡£S¡¢a¡¢b¡¢c¡¢d¡¢eºÍa¡ä¡¢b¡ä¡¢c¡äÊÇÑز¨´«²¥·½ÏòÉϵļä¾àΪ1mµÄ9¸öÖʵ㣬t£½0ʱ¿Ì£¨³ýSÍ⣩¾ù¾²Ö¹ÓÚƽºâλÖá£ÒÑÖª²¨µÄ´«²¥ËٶȴóСΪ1m/s£¬µ±t£½1sʱ²¨Ô´SµÚÒ»´Îµ½´ï×î¸ßµã£¬ÔòÔÚt£½4sµ½t£½4£®6sÕâ¶Îʱ¼äÄÚ£¬ÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨ £©
A£®ÖʵãcµÄ¼ÓËÙ¶ÈÕýÔÚÔö´ó
B£®ÖʵãaµÄËÙ¶ÈÕýÔÚ¼õС
C£®ÖʵãbµÄÔ˶¯·½ÏòÏòÉÏ
D£®Öʵãc¡äµÄλÒÆÕýÔÚ¼õС
D
½âÎö:
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿