ÌâÄ¿ÄÚÈÝ

ÈçͼËùʾΪһÁмòгºá²¨ÑØxÖá´«²¥ÔÚijʱ¿Ì²¨ÐÎͼÏߣ¬
ÖʵãPÔÚ¸Ãʱ¿ÌµÄËÙ¶ÈΪv£¬¾­¹ý0.1s¸ÃÖʵãµÄËÙ¶ÈÈÔΪv£¬ÔÙ¾­¹ý0.1s¸ÃÖʵãµÄËٶȴóСµÈÓÚvµÄ´óС£¬¶ø·½ÏòÓëvµÄ·½ÏòÏà·´£¬¹ØÓڸò¨µÄ´«²¥ÏÂÁÐÐðÊöÕýÈ·µÄÊÇ£¨     £©
A£®Èô²¨ÑØxÕý·½Ïò´«²¥£¬ËÙ¶ÈΪ10m/s
B£®Èô²¨ÑØx¸º·½Ïò´«²¥£¬ËÙ¶ÈΪ10m/s
C£®Èô²¨ÑØx¸º·½Ïò´«²¥£¬ËÙ¶ÈΪ20m/s
D£®Èô²¨ÑØxÕý·½Ïò´«²¥£¬ËÙ¶ÈΪ10m/s
B

ÊÔÌâ·ÖÎö£ºÖʵãPÔÚÁãʱ¿ÌÒ»¶¨ÑØyÖḺ·½ÏòÔ˶¯£¬Ö»ÓÐÕâÑù²ÅÄÜÂú×ãÌâ¸øÌõ¼þ£¬ËùÒÔ²¨ÑØxÖḺ·½Ïò´«²¥£®T£½0.4s£®£½10m/s£¬Ó¦Ñ¡B
µãÆÀ£º±¾ÌâµÄÄѵãÔÚÓÚÅжϲ¨µÄ´«²¥·½ÏòÉÏ£¬¹Ø¼üÊǸù¾ÝÒ»¸öÖÜÆÚ²¨µÄ´«²¥Ê±¼äÏà¶Ô±È£¬
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø