ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿Ò»Áмòгºá²¨ÑØxÖáÕý·½Ïò´«²¥£¬t£½0ʱ²¨ÐÎͼÈçͼÖÐʵÏßËùʾ£¬´Ëʱ²¨¸ÕºÃ´«µ½cµã£»t£½0.6 sʱ²¨Ç¡ºÃ´«µ½eµã£¬²¨ÐÎÈçͼÖÐÐéÏßËùʾ£¬a¡¢b¡¢c¡¢d¡¢eÊǽéÖÊÖеÄÖʵ㣮ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ______¡£
A. ÕâÁв¨µÄÖÜÆÚT£½0.8 s
B. µ±t£½0.6 sʱÖʵãaËÙ¶ÈÑØyÖḺ·½Ïò
C. t£½0.6 sʱ£¬Öʵãe½«ÒªÑØyÖáÕý·½ÏòÔ˶¯
D. ÖʵãdÔÚÕâ¶Îʱ¼äÄÚͨ¹ýµÄ·³ÌΪ20 cm
E. ÖʵãcÔÚÕâ¶Îʱ¼äÄÚÑØxÖáÕý·½ÏòÒƶ¯ÁË3 m
¡¾´ð°¸¡¿ACD
¡¾½âÎö¡¿
A¡¢´Ó²¨¶¯Í¼Ïñ¿ÉÒÔ¿´³ö£¬´Ë²¨ÔÚ0.6sÄÚÑز¨µÄ·½Ïò´«²¥ÁË £¬¼´ £¬½âµÃT£½0.8 s£¬¹ÊA¶Ô£»
B¡¢¸ù¾ÝÇ°´øºó¿ÉÖªµ±t£½0.6 sʱÖʵãaËÙ¶ÈÑØyÖáÕý·½Ïò£¬¹ÊB´í£»
C¡¢¸ù¾Ý²¨µÄ´«²¥ÓëÕñ¶¯·½ÏòµÄ¹Øϵ¿ÉÖªt£½0.6 sʱ£¬Öʵãe½«ÒªÑØyÖáÕý·½ÏòÔ˶¯£¬¹ÊC¶Ô£»
D¡¢ÖʵãdÔÚÕâ¶Îʱ¼äÄÚÕñ¶¯¹ý°ë¸öÖÜÆÚ£¬ËùÒÔͨ¹ýµÄ·³ÌΪ20 cm£¬¹ÊD¶Ô£»
E. ÖʵãcÖ»ÔÚ×Ô¼ºµÄƽºâλÖÃÉÏÏÂÕñ¶¯²»»áË沨Òƶ¯£¬¹ÊE´í£»
¹ÊÑ¡ACD
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿