ÌâÄ¿ÄÚÈÝ
6£®¿Æ¼¼µÄ·¢Õ¹ÕýÔÚ²»¶ÏµÄ¸Ä±ä×ÅÎÒÃǵÄÉú»î£¬Èçͼ¼×ÊÇÒ»¿îÊÖ»úÖ§¼Ü£¬Æä±íÃæ²ÉÓÃÁËÄÉÃ×΢Îü²ÄÁÏ£¬ÓÃÊÖ´¥ÅöÎÞÕ³¸Ð£¬½Ó´¥µ½Æ½Õû¹â»¬µÄÓ²ÐÔÎïÌåʱ£¬»áÀÎÀÎÎü¸½ÔÚÎïÌåÉÏ£¬ÈçͼÒÒÊÇÊÖ»ú¾²Ö¹Îü¸½ÔÚÖ§¼ÜÉϵIJàÊÓͼ£¬ÈôÊÖ»úµÄÖØÁ¦ÎªG£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©A£® | ÄÉÃײÄÁ϶ÔÊÖ»úµÄÖ§³ÖÁ¦ÓëÊÖ»úËùÊܵÄÖØÁ¦ÊÇÒ»¶ÔƽºâÁ¦ | |
B£® | ÊÖ»úÊܵ½µÄĦ²ÁÁ¦´óСΪGcos¦È | |
C£® | ÄÉÃײÄÁ϶ÔÊÖ»úµÄ×÷ÓÃÁ¦´óСΪGsin¦È | |
D£® | ÄÉÃײÄÁ϶ÔÊÖ»úµÄ×÷ÓÃÁ¦ÊúÖ±ÏòÉÏ |
·ÖÎö ÊÖ»ú´¦ÓÚ¾²Ö¹×´Ì¬£¬ÊÜÖØÁ¦¡¢Ö§³ÖÁ¦¡¢ÎüÒýÁ¦ºÍ¾²Ä¦²ÁÁ¦£¬ÊÜÁ¦Æ½ºâ£¬¸ù¾ÝƽºâÌõ¼þ·ÖÎö¼´¿É£®
½â´ð ½â£ºA¡¢ÊÖ»ú´¦ÓÚ¾²Ö¹×´Ì¬£¬ÊÜÖØÁ¦¡¢Ö§³ÖÁ¦ÎüÒýÁ¦ºÍ¾²Ä¦²ÁÁ¦¶øƽºâ£¬¸ù¾ÝƽºâÌõ¼þ¿ÉÖª£¬ÔÚ´¹Ö±Ö§¼Ü·½ÏòÓУºFN=Gcos¦È+FÎü£¬¹ÊÖ§³ÖÁ¦ÓëÖØÁ¦²»ÊÇƽºâÁ¦£¬¹ÊA´íÎó£»
B¡¢ÔÚƽÐÐбÃæ·½Ïò£¬¸ù¾ÝƽºâÌõ¼þ£¬ÓУºf=Gsin¦È£¬¹ÊB´íÎó£»
CD¡¢ÊÖ»ú´¦ÓÚ¾²Ö¹×´Ì¬£¬ÊÜÁ¦Æ½ºâ£¬Êܵ½ÖØÁ¦ºÍÄÉÃײÄÁ϶ÔÊÖ»úµÄ×÷ÓÃÁ¦£¨ÊÇÖ§³ÖÁ¦¡¢ÎüÒýÁ¦ºÍĦ²ÁÁ¦µÄºÏÁ¦£©£¬¸ù¾ÝƽºâÌõ¼þ¿ÉÖª£¬ÄÉÃײÄÁ϶ÔÊÖ»úµÄ×÷ÓÃÁ¦´óСµÈÓÚÖØÁ¦£¬·½ÏòÓëÖØÁ¦·½ÏòÏà·´£¬ÊúÖ±ÏòÉÏ£¬¹ÊC´íÎó£¬DÕýÈ·£»
¹ÊÑ¡£ºD
µãÆÀ ±¾ÌâÊǹ²µãÁ¦Æ½ºâÎÊÌ⣬¹Ø¼üÒªÕÆÎÕƽºâÌõ¼þµÄÍÆÂÛ£¬Áé»îÔËÓÃÕý½»·Ö½â·¨£¬·ÖÎöÁ¦Ö®¼äµÄ¹Øϵ£¬ÒªÇóͬѧÃÇÄÜ´ÓÌâÄ¿ÖлñÈ¡ÓÐЧÐÅÏ¢£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
13£®¿Õ¼äijÇøÓòµç³¡Ïß·Ö²¼ÈçͼËùʾ£¬´øÕýµçСÇò£¨ÖÊÁ¿Îªm£¬µçºÉÁ¿Îªq£©£¬ÔÚAµãËÙ¶ÈΪv1£¬·½ÏòˮƽÏòÓÒ£¬ÖÁBµãËÙ¶ÈΪv2£¬v2Óëˮƽ·½Ïò¼ä¼Ð½ÇΪ¦Á£¬A¡¢B¼ä¸ß¶È²îΪH£¬ÒÔÏÂÅжÏÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | A¡¢BÁ½µã¼äµçÊƲîU=$\frac{m{{v}_{2}}^{2}-m{{v}_{1}}^{2}}{2q}$ | |
B£® | СÇòÓÉAÖÁB£¬µçÊÆÄܵļõÉÙÁ¿Îª$\frac{1}{2}$mv22-$\frac{1}{2}$mv12-mgH | |
C£® | СÇòÓÉAÖÁB£¬µç³¡Á¦×ö¹¦Îª$\frac{1}{2}$mv22-$\frac{1}{2}$mv12 | |
D£® | СÇòÖØÁ¦ÔÚBµãµÄ˲ʱ¹¦ÂÊΪmgv2cos ¦Á |
10£®ÓÐÈý¸öÍêÈ«ÏàͬµÄ½ðÊôСÇòA¡¢B¡¢C£¬A´øµçºÉÁ¿+6Q£¬B´øµçºÉÁ¿-3Q£¬CÇò²»´øµç£¬½ñ½«A¡¢BÁ½Çò¹Ì¶¨ÆðÀ´ÇÒ¾àÀëÔ¶´óÓÚСÇò°ë¾¶£¬È»ºóÈÃC¾ºÜ¶à´Î·´¸´ÓëA¡¢B½Ó´¥£¬×îºóÒÆÈ¥CÇò£¬ÔòA¡¢B¼äµÄÏ໥×÷ÓÃÁ¦±äΪÔÀ´µÄ£¨¡¡¡¡£©
A£® | 6±¶ | B£® | 18±¶ | C£® | $\frac{1}{18}$ | D£® | $\frac{1}{6}$ |
11£®ÈçͼËùʾ£¬Î»ÓÚбÃæÌåÉϵÄÎï¿éMÔÚÑØбÃæÏòÉϵÄÁ¦FµÄ×÷ÓÃÏ£¬´¦ÓÚ¾²Ö¹×´Ì¬£¬Ôò¹ØÓÚ¾²Ä¦²ÁÁ¦µÄ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | Îï¿éÊܾ²Ä¦²ÁÁ¦µÄ·½Ïò¿ÉÄÜÑØбÃæÏòÉÏ | |
B£® | Îï¿éÊܾ²Ä¦²ÁÁ¦²»¿ÉÄÜΪÁã | |
C£® | бÃæÌåÊÜˮƽÃæµÄ¾²Ä¦²ÁÁ¦·½Ïò¿ÉÄÜˮƽÏòÓÒ | |
D£® | бÃæÌåÊÜˮƽÃæµÄ¾²Ä¦²ÁÁ¦²»¿ÉÄÜΪÁã |
18£®¹ØÓÚµç´Å³¡Óëµç´Å²¨£¬ÒÔϽáÂÛÖÐÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | Ôڵ糡ÖÜΧ¿Õ¼äÒ»¶¨ÄܲúÉú´Å³¡£¬Ôڴų¡ÖÜΧ¿Õ¼äÒ²Ò»¶¨ÄܲúÉúµç³¡ | |
B£® | µç´Å²¨´Ó¿ÕÆø½øÈëË®Öв¨³¤±ä¶Ì | |
C£® | µç´Å²¨µÄƵÂÊÓëËü´«²¥µÄËٶȴóС³ÉÕý±È | |
D£® | Õñµ´µç³¡ºÍÕñµ´´Å³¡½»Ìæ²úÉú£¬Ï໥ÒÀ´æ£¬Ðγɲ»¿É·ÖÀëµÄͳһÌ壬¼´µç´Å³¡£¬¶øµç´Å³¡Óɽü¼°Ô¶µØ´«²¥£¬Ðγɵç´Å²¨ |