ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÔÚ¡°Ì½¾¿ÔȱäËÙÖ±ÏßÔ˶¯µÄ¹æÂÉ¡±µÄʵÑéÖÐ.
£¨1£©Ä¿Ç°ÊµÑéÊÒÓõĴòµã¼ÆʱÆ÷Óеç»ð»¨´òµã¼ÆʱÆ÷ºÍµç´Åʽ´òµã¼ÆʱÆ÷Á½ÖÖ£¬ËüÃǵÄÔÀí»ù±¾Ò»Ñù£¬Ëù½ÓµçÔ´¾ùΪ_____£¨Ìî¡°½»Á÷¡±»ò¡°Ö±Á÷¡±£©µçÔ´£¬ÈôƵÂÊΪ 50Hz£¬Ôòÿ________s ´òÒ»´Îµã¡£
£¨2£©ÊµÑéÖÐijͬѧÓôòµã¼ÆʱÆ÷¼Ç¼Á˱»Ð¡³µÍ϶¯µÄÖ½´øµÄÔ˶¯Çé¿ö£¬ÔÚÖ½´øÉÏÈ·¶¨ÁË A¡¢ B¡¢C¡¢D¡¢E¡¢F¡¢G ¹² 7 ¸ö¼ÆÊýµã£¬ÆäÏàÁÚµã¼äµÄ¾àÀëÈçͼËùʾ£¬Ã¿Á½¸öÏàÁÚ¼ÆÊýµãÖ®¼äµÄ ʱ¼ä¼ä¸ôΪ 0.10s¡£ B ¼ÆÊýµãʱС³µµÄ˲ʱËٶȴóС vB=_____m/s£¬ÓÉÖ½´øÇó³öС³µµÄ¼ÓËٶȴóС a=______m/s2 £¨½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®
¡¾´ð°¸¡¿½»Á÷ 0.02s 0.400m/s 0.80m/s2
¡¾½âÎö¡¿
(1)[1][2]µç´Å´òµã¼ÆʱÆ÷ºÍµç»ð»¨¼ÆʱÆ÷¶¼ÊÇʹÓý»Á÷µçÔ´µÄ¼ÆʱÒÇÆ÷£¬µ±µçÔ´µÄƵÂÊΪ50Hzʱ£¬Ëüÿ¸ô0.02s´òÒ»´Îµã¡£
(2)[3][4]ÀûÓÃÔȱäËÙÖ±ÏßÔ˶¯µÄÍÆÂÛµÃB ¼ÆÊýµãʱС³µµÄ˲ʱËٶȴóСΪ£º
¸ù¾ÝÔȱäËÙÖ±ÏßÔ˶¯µÄÍÆÂÛ¹«Ê½¡÷x=at2¿ÉÒÔÇó³ö¼ÓËٶȵĴóСΪ£º