ÌâÄ¿ÄÚÈÝ
Ò»¿ÍÔËÁгµÔÈËÙÐÐÊ»£¬Æä³µÂÖÔÚ¹ìµÀ¼äµÄ½Ó·ì´¦»á²úÉúÖÜÆÚÐÔµÄײ»÷¡£×øÔڸÿͳµÖеÄijÂÿͲâµÃ´ÓµÚ1´Îµ½µÚ16´Îײ»÷ÉùÖ®¼äµÄʱ¼ä¼ä¸ôΪ10.0 s¡£ÔÚÏàÁÚµÄƽÐгµµÀÉÏÓÐÒ»Áлõ³µ£¬µ±¸ÃÂÿ;¹ý»õ³µ³µÎ²Ê±£¬»ð³µÇ¡ºÃ´Ó¾²Ö¹¿ªÊ¼ÒԺ㶨¼ÓËÙ¶ÈÑؿͳµÐнø·½ÏòÔ˶¯¡£¸ÃÂÿÍÔڴ˺óµÄ20.0 sÄÚ£¬¿´µ½Ç¡ºÃÓÐ30½Ú»õ³µ³µÏá±»ËûÁ¬Ðø³¬¹ý¡£ÒÑ֪ÿ¸ù¹ìµÀµÄ³¤¶ÈΪ25.0 m£¬Ã¿½Ú»õ³µ³µÏáµÄ³¤¶ÈΪ16.0 m£¬»õ³µ³µÏá¼ä¾àºöÂÔ²»¼Æ¡£Çó
£¨1£©¿Í³µÔËÐеÄËٶȴóС£»
£¨2£©»õ³µÔËÐмÓËٶȵĴóС¡£
£¨1£© £¨2£©a£½1.35 m/s2
½âÎö
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
ÈçͼËùʾ£¬ÉÏÏ¿ª¿Ú¡¢Äڱڹ⻬µÄ͹ÜPºÍËÜÁϹÜQÊúÖ±·ÅÖã¬Ð¡´Å¿éÏȺóÔÚÁ½¹ÜÖдÓÏàͬ¸ß¶È´¦Óɾ²Ö¹ÊÍ·Å£¬²¢ÂäÖÁµ×²¿£¬ÔòС´Å¿é[ѧ¿ÆÍø
A£®ÔÚPºÍQÖж¼×ö×ÔÓÉÂäÌåÔ˶¯ |
B£®ÔÚÁ½¸öÏÂÂä¹ý³ÌÖеĻúеÄܶ¼Êغã |
C£®ÔÚPÖеÄÏÂÂäʱ¼ä±ÈÔÚQÖеij¤ |
D£®ÂäÖÁµ×²¿Ê±ÔÚPÖеÄËٶȱÈÔÚQÖеĴó |
½«Ð¡Çòa´ÓµØÃæÒÔijһ³õËÙ¶ÈÊúÖ±ÉÏÅ×µÄͬʱ£¬½«ÁíÒ»ÏàͬÖÊÁ¿µÄСÇòb´ÓaÇòÕýÉÏ·½¾àµØÃæh´¦Óɾ²Ö¹ÊÍ·Å£¬Á½ÇòÇ¡ÔÚ ´¦ÏàÓö£¨²»¼Æ¿ÕÆø×èÁ¦£©£®ÔòÒÔÏÂ˵·¨ÕýÈ·µÄÊÇ£¨¡¡ £©
A£®aÎïÌåµÄ³õËÙ¶ÈΪ |
B£®a¡¢bÁ½Çò´Ó¿ªÊ¼µ½ÏàÓöµÄ¹ý³ÌÖУ¬Æ½¾ùËٶȴóСÏàµÈ |
C£®Á½ÇòͬʱÂäµØ |
D£®ÏàÓöʱÁ½ÇòËٶȴóСÏàµÈ |