ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÈçͼËùʾ£¬Ö±¾¶·Ö±ðΪDºÍ2DµÄͬÐÄÔ²´¦ÓÚͬһÊúÖ±ÃæÄÚ£¬OΪԲÐÄ£¬GHΪ´óÔ²µÄˮƽֱ¾¶¡£Á½Ô²Ö®¼äµÄ»·ÐÎÇøÓò£¨¢ñÇø£©ºÍСԲÄÚ²¿£¨¢òÇø£©¾ù´æÔÚ´¹Ö±Ô²ÃæÏòÀïµÄÔÈÇ¿´Å³¡¡£¼ä¾àΪdµÄÁ½Æ½ÐнðÊô¼«°å¼äÓÐÒ»ÔÈÇ¿µç³¡£¬Éϼ«°å¿ªÓÐһС¿×¡£Ò»ÖÊÁ¿Îªm£¬µçÁ¿Îª+qµÄÁ£×ÓÓÉС¿×Ï·½d/2´¦¾²Ö¹ÊÍ·Å£¬¼ÓËÙºóÁ£×ÓÒÔÊúÖ±ÏòÉϵÄËÙ¶ÈvÉä³öµç³¡£¬Óɵã½ô¿¿´óÔ²ÄÚ²àÉäÈë´Å³¡¡£²»¼ÆÁ£×ÓµÄÖØÁ¦¡£
£¨1£©Ç󼫰å¼äµç³¡Ç¿¶ÈµÄ´óС£»
£¨2£©ÈôÁ£×ÓÔ˶¯¹ì¼£ÓëСԲÏàÇУ¬ÇóÇø´Å¸ÐӦǿ¶ÈµÄ´óС£»
£¨3£©Èô¢ñÇø£¬¢òÇø´Å¸ÐӦǿ¶ÈµÄ´óС·Ö±ðΪ2mv/qD£¬4mv/qD£¬Á£×ÓÔ˶¯Ò»¶Îʱ¼äºóÔٴξ¹ýHµã£¬ÇóÕâ¶Îʱ¼äÁ£×ÓÔ˶¯µÄ·³Ì¡£
¡¾´ð°¸¡¿
£¨1£©
£¨2£©
»ò
£¨3£©
s=5.5¦ÐD
¡¾½âÎö¡¿£¨1£©¸ù¾Ý¶¯Äܶ¨Àí£º,½âµÃE=
(2)Á£×ÓÔ˶¯¹ì¼£ÓëСԲÏàÇУ¬Ôòµ±ÄÚÇÐʱ£¬°ë¾¶,ÓÉ£¬½âµÃB=
ÍâÇÐʱ£¬°ë¾¶Îª£º
ÓÉ£¬µÃB=,
(3)ÈôIÇøÓòµÄ´Å¸ÐӦǿ¶ÈΪ£¬ÔòÁ£×ӵİ뾶Ϊ;IIÇøÓòµÄ´Å¸ÐӦǿ¶ÈΪ
ÔòÁ£×ÓÔ˶¯°ë¾¶Îª
É裺£»
ͬ£¬ÉèΪ£¬¢òÇøÄÚÔ²»¡Ëù¶ÔÔ²ÐĽÇΪ£¬Ô²»¡ºÍ´óÔ²µÄÁ½¸öÇеãÓëÔ²ÐÄOÁ¬Ïß¼äµÄ¼Ð½ÇÉèΪ£¬Óɼ¸ºÎ¹Øϵ¿ÉµÃ£º=1200£»=1800£»=600¡£Á£×ÓÖظ´ÉÏÊö½»ÌæÔ˶¯»Øµ½Hµã£¬¹ì¼£ÈçͼËùʾ£¬ÉèÁ£×ÓÔÚ¢ñÇøºÍ¢òÇø×öÔ²ÖÜÔ˶¯µÄʱ¼ä·Ö±ðΪ¡¢£¬¿ÉµÃ£º=,
ÉèÁ£×ÓÔ˶¯µÄ·³ÌΪs£¬ÓÉÔ˶¯¹«Ê½¿ÉÖª£ºs=v(t1+t2)
ÁªÁ¢ÉÏÊö¸÷ʽ¿ÉµÃ£ºs=5.5¦ÐD
¡¾¿¼µã¾«Îö¡¿¹ØÓÚ±¾Ì⿼²éµÄ¶¯Äܶ¨ÀíµÄ×ÛºÏÓ¦Óã¬ÐèÒªÁ˽âÓ¦Óö¯Äܶ¨ÀíÖ»¿¼Âdzõ¡¢Ä©×´Ì¬£¬Ã»ÓÐÊغãÌõ¼þµÄÏÞÖÆ£¬Ò²²»ÊÜÁ¦µÄÐÔÖʺÍÎïÀí¹ý³ÌµÄ±ä»¯µÄÓ°Ïì.ËùÒÔ£¬·²Éæ¼°Á¦ºÍλÒÆ£¬¶ø²»Éæ¼°Á¦µÄ×÷ÓÃʱ¼äµÄ¶¯Á¦Ñ§ÎÊÌ⣬¶¼¿ÉÒÔÓö¯Äܶ¨Àí·ÖÎöºÍ½â´ð£¬¶øÇÒÒ»°ã¶¼±ÈÓÃÅ£¶ÙÔ˶¯¶¨ÂɺͻúеÄÜÊغ㶨Âɼò½Ý²ÅÄܵóöÕýÈ·´ð°¸£®