ÌâÄ¿ÄÚÈÝ
ÔÚ¡°Óõ¥°Ú²â¶¨ÖØÁ¦¼ÓËٶȡ±µÄʵÑéÖУº
(1)ΪÁ˼õС²âÁ¿ÖÜÆÚµÄÎó²î£¬¼Æʱ¿ªÊ¼Ê±£¬°ÚÇòÓ¦ÊǾ¹ý×î £¨Ìî¡°¸ß¡±»ò¡°µÍ¡±£©µãµÄλÖã¬ÇÒÓÃÃë±í²âÁ¿µ¥°ÚÍê³É¶à´Î´ÎÈ«Õñ¶¯ËùÓõÄʱ¼ä£¬Ãë±íµÄʾÊýÈçͼ¼×Ëùʾ£¬ÔòÃë±íµÄʾÊýΪt= s
(2£©ÓÃÖ÷³ß×îС·Ö¶ÈΪ1mm£¬ÓαêÉÏÓÐ20¸ö·Ö¶ÈµÄ¿¨³ß²âÁ¿½ðÊôÇòµÄÖ±¾¶£¬½á¹ûÈçͼÒÒËùʾ£¬¿ÉÒÔ¶Á³ö´Ë½ðÊôÇòµÄÖ±¾¶ÎªD=________mm¡£
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082414000477555970.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241400048223389.png)
£¨3£©ÎªÁËÌá¸ßʵÑ龫¶È£¬ÔÚÊÔÑéÖпɸı伸´Î°Ú³¤
£¬²â³öÏàÓ¦µÄÖÜÆÚ£Ô£¬´Ó¶øµÃ³öÒ»×é¶ÔÓ¦µÄ
ºÍTµÄÊýÖµ£¬ÔÙÒÔ
Ϊºá×ø±êT2Ϊ×Ý×ø±ê£¬½«ËùµÃÊý¾ÝÁ¬³ÉÖ±ÏßÈçͼËùʾ£¬ÀûÓÃͼÏßµÄбÂÊ
¿ÉÇó³öÖØÁ¦¼ÓËٶȵıí´ïʽΪ
= £¬¿ÉÇóµÃ
= m/s2¡££¨±£ÁôÈýλÓÐЧÊý×Ö£©
(1)ΪÁ˼õС²âÁ¿ÖÜÆÚµÄÎó²î£¬¼Æʱ¿ªÊ¼Ê±£¬°ÚÇòÓ¦ÊǾ¹ý×î £¨Ìî¡°¸ß¡±»ò¡°µÍ¡±£©µãµÄλÖã¬ÇÒÓÃÃë±í²âÁ¿µ¥°ÚÍê³É¶à´Î´ÎÈ«Õñ¶¯ËùÓõÄʱ¼ä£¬Ãë±íµÄʾÊýÈçͼ¼×Ëùʾ£¬ÔòÃë±íµÄʾÊýΪt= s
(2£©ÓÃÖ÷³ß×îС·Ö¶ÈΪ1mm£¬ÓαêÉÏÓÐ20¸ö·Ö¶ÈµÄ¿¨³ß²âÁ¿½ðÊôÇòµÄÖ±¾¶£¬½á¹ûÈçͼÒÒËùʾ£¬¿ÉÒÔ¶Á³ö´Ë½ðÊôÇòµÄÖ±¾¶ÎªD=________mm¡£
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/2014082414000477555970.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/201408241400048223389.png)
£¨3£©ÎªÁËÌá¸ßʵÑ龫¶È£¬ÔÚÊÔÑéÖпɸı伸´Î°Ú³¤
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140004884280.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140004884280.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140004884280.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005165312.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005212273.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005212273.png)
£¨1£©µÍ 75.2 £¨2£© 13.40 £¨3£©
9.86
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005321586.png)
£¨1£©Ó¦´Ó°ÚÇòµÄ×îµÍµã¿ªÊ¼¼Æʱ£¬±È½Ï׼ȷ¡£Ãë±íʾÊýΪ75.2s
£¨2£©![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005352933.png)
£¨3£©¸ù¾Ý
µÃ
£¬¼´k=
£¬ËùÒÔg=
´úÈëÊý¾Ý¿ÉµÃ
£¨2£©
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005352933.png)
£¨3£©¸ù¾Ý
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005415740.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005462726.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005540490.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824140005321586.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿