ÌâÄ¿ÄÚÈÝ

6£®³¤¶È¾ùΪLµÄƽÐнðÊô°åABÏà¾àΪd£¬½ÓͨµçÔ´ºó£¬ÔÚÁ½°åÖ®¼äÐγÉÔÈÇ¿µç³¡£®ÔÚA°åµÄÖмäÓÐÒ»¸öС¿×K£¬Ò»¸ö´ø+qµÄÁ£×ÓPÓÉA°åÉÏ·½¸ßh´¦µÄOµã×ÔÓÉÏÂÂ䣬´ÓK¿×ÖнøÈëµç³¡²¢´òÔÚB°åÉÏK¡äµã´¦£®µ±PÁ£×Ó½øÈëµç³¡Ê±£¬ÁíÒ»¸öÓëPÏàͬµÄÁ£×ÓQÇ¡ºÃ´ÓÁ½°å¼ä¾àB°å$\frac{d}{2}$´¦µÄO¡äµãˮƽ·ÉÈ룬¶øÇÒÇ¡ºÃÓëPÁ£×Óͬʱ´òÔÚK¡ä´¦£®Èç¹ûÁ£×Ó½øÈëµç³¡ºó£¬ËùÊܵÄÖØÁ¦ºÍÁ£×Ó¼äµÄ×÷ÓÃÁ¦¾ù¿ÉºöÂÔ²»¼Æ£¬ÅжÏÒÔÏÂÕýÈ·µÄ˵·¨ÊÇ£¨¡¡¡¡£©
A£®PÁ£×Ó½øÈëµç³¡Ê±ËٶȵÄƽ·½Âú×ãv2=$\frac{d}{4}$a£¨aΪÁ£×ÓÔڵ糡ÖÐËùÊܵ糡Á¦²úÉúµÄ¼ÓËٶȴóС£©
B£®½«P¡¢QÁ£×ÓµçÁ¿¾ùÔöΪ+2q£¬ÆäËüÌõ¼þ²»±ä£¬P¡¢QÁ£×Óͬʱ½øÈëµç³¡ºó£¬ÈÔÄÜͬʱ´òÔÚK¡äµã
C£®±£³ÖP¡¢QÔ­À´µÄµçÁ¿²»±ä£¬½«OµãºÍO¡äµã¾ùÏòÉÏÒƶ¯ÏàͬµÄ¾àÀë$\frac{d}{4}$£»ÇÒʹP¡¢Qͬʱ½øÈëµç³¡£¬ÔòPÁ£×Ó½«ÏÈ»÷ÖÐK¡äµã
D£®ÆäËüÌõ¼þ²»±ä£¬½«QÁ£×Ó½øÈëµç³¡Ê±µÄ³õËٶȱäΪԭÀ´µÄ2±¶£¬½«µçÔ´µçѹҲÔö¼ÓΪԭÀ´µÄ2±¶£¬P¡¢Qͬʱ½øÈëµç³¡£¬ÈÔÄÜͬʱ´òÔÚK¡äµã

·ÖÎö ¸ù¾Ý¶ÔÁ£×Ó×öÔȼÓËÙÖ±ÏßÓëÀàƽÅ×Ô˶¯µÄ·ÖÎö£¬¿É½«ÀàƽÅ×Ô˶¯·Ö½â³Éˮƽ·½ÏòÔÈËÙÖ±ÏßÔ˶¯ÓëÊúÖ±·½Ïò×ÔÓÉÂäÌåÔ˶¯£¬ÔÙÓÉÔ˶¯Ñ§¹«Ê½ÓëÅ£¶ÙµÚ¶þ¶¨ÂÉ£¬¼´¿ÉÇó½â£®

½â´ð ½â£ºA¡¢¸ù¾ÝÌâÒâ¿ÉÖª£¬Á£×ÓP½øÈëµç³¡ºóµÄʱ¼äÓëÁ£×ÓQ½øÈëµç³¡Ô˶¯µÄʱ¼äÏàͬ£¬Òò´ËÓÉÔ˶¯Ñ§¹«Ê½£¬ÔòÓÐÁ£×ÓQ£º$\frac{d}{2}$=$\frac{1}{2}$at2£¬Á£×ÓP£ºd=v0t+$\frac{1}{2}$at2£¬
ËùÒÔ½âµÃ£ºv02=$\frac{d}{4}$a£¬¼´½øÈëµç³¡Ê±ËٶȵÄƽ·½Âú×ãv02=$\frac{d}{4}$a£¬¹ÊAÕýÈ·£»
B¡¢½«P¡¢QÁ£×ÓµçÁ¿¾ùÔöΪ+2q£¬ÆäËüÌõ¼þ²»±ä£¬ÔòÁ½Á£×ӵļÓËٶȾùÔö¼Ó2±¶£¬µ«ÓÉÓÚÁ£×ÓPµÄ½øÈëµç³¡µÄËÙ¶ÈûÓÐÔö¼Ó2±¶£¬½áºÏAÑ¡Ïî·ÖÎö£¬Òò´Ë²»ÄÜͬʱ´òÔÚK¡äµã£¬¹ÊB´íÎó£»
C¡¢±£³ÖP¡¢QÔ­À´µÄµçÁ¿²»±ä£¬½«OµãºÍO¡äµã¾ùÏòÉÏÒƶ¯ÏàͬµÄ¾àÀë$\frac{d}{4}$£»ÈôʹP¡¢Qͬʱ½øÈëµç³¡£¬ÓÉÉÏ·ÖÎö¿ÉÖª£¬P½øÈëµç³¡µÄËٶȱä´ó£¬¶øQÔڵ糡ÖÐÔ˶¯Ê±¼ä±ä³¤£¬ÔòPÁ£×Ó½«ÏÈ»÷ÖÐK¡äµã£¬¹ÊCÕýÈ·£»
D¡¢µ±½«QÁ£×Ó½øÈëµç³¡Ê±µÄ³õËٶȱäΪԭÀ´µÄ2±¶£¬½«µçÔ´µçѹҲÔö¼ÓΪԭÀ´µÄ2±¶£¬ÆäËüÌõ¼þ²»±ä£¬P¡¢Qͬʱ½øÈëµç³¡£¬µ¼ÖÂÔ˶¯µÄʱ¼ä±ä¶Ì£¬ÔòÁ£×ÓQ²»¿ÉÄÜ´òÔÚÔ­À´Î»Ö㬹ÊD´íÎó£»
¹ÊÑ¡£ºAC£®

µãÆÀ ¿¼²éÁ£×Ó×öÔȼÓËÙÖ±ÏßÔ˶¯ÓëÔȼÓËÙÇúÏßÔ˶¯£¬ÕÆÎÕ´¦ÀíÖ±ÏßÓëÇúÏßÔ˶¯µÄ·½·¨Óë´¦Àí¹æÂÉ£¬Àí½âÔ˶¯Ñ§¹«Ê½ÓëÅ£¶ÙÔ˶¯¶¨ÂɵÄÓ¦Óã®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

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

¾«Ó¢¼Ò½ÌÍø