ÌâÄ¿ÄÚÈÝ
3£®ÈçͼËùʾ£¬°ëÔ²²Û¹â»¬¾øÔµÇҹ̶¨£¬Ô²ÐÄÊÇO£¬×îµÍµãÊÇP£¬Ö±¾¶MNˮƽ£¬a¡¢bÊÇÁ½¸öÍêÈ«ÏàͬµÄ´øÕýµçСÇò£¨ÊÓΪµãµçºÉ£©£¬b¹Ì¶¨ÔÚMµã£¬a´ÓNµã¾²Ö¹ÊÍ·Å£¬ÑØ°ëÔ²²ÛÔ˶¯¾¹ýPµãµ½´ïijµãQ£¨Í¼ÖÐδ»³ö£©Ê±ËÙ¶ÈΪÁ㣮ÔòСÇòa£¨¡¡¡¡£©A£® | ´ÓNµ½QµÄ¹ý³ÌÖУ¬ÖØÁ¦Óë¿âÂØÁ¦µÄºÏÁ¦Ò»Ö±Ôö´ó | |
B£® | ´ÓNµ½PµÄ¹ý³ÌÖУ¬ËÙÂÊÒ»Ö±Ôö´ó | |
C£® | ´ÓNµ½PµÄ¹ý³ÌÖУ¬Ð¡ÇòËùÊܵ¯Á¦ÏÈÔö¼Óºó¼õС | |
D£® | ´ÓPµ½QµÄ¹ý³ÌÖУ¬¶¯ÄܼõÉÙÁ¿´óÓÚµçÊÆÄÜÔö¼ÓÁ¿ |
·ÖÎö ·ÖÎö¿âÂØÁ¦¼°ÖØÁ¦µÄºÏÁ¦£¬¸ù¾Ý¹¦µÄ¹«Ê½Ã÷È·ºÏÁ¦×ö¹¦Çé¿ö£»ÔÙ¸ù¾ÝÖØÁ¦×ö¹¦ºÍµç³¡Á¦×ö¹¦µÄÌصãÓëÊÆÄܵĹØϵ·ÖÎöµçÊÆÄܵı仯
½â´ð ½â£ºA¡¢aÓÉNµ½QµÄ¹ý³ÌÖУ¬ÖØÁ¦ÊúÖ±ÏòÏ£¬¶ø¿âÂØÁ¦Ò»Ö±ÑضþÕßµÄÁ¬Ïß·½Ïò£¬Ôò¿ÉÖª£¬ÖØÁ¦Óë¿âÂØÁ¦µÄ¼Ð½ÇÒ»Ö±¼õС£¬ÇÒ¿âÂØÁ¦Ôö´ó£¬ÒÀ¾ÝÁ¦µÄºÏ³É·¨Ôò£¬¹ÊºÏÁ¦Ò»Ö±ÔÚÔö´ó£»¹ÊAÕýÈ·£»
B¡¢ÔÚÕû¸ö¹ý³ÌÖкÏÁ¦ÏÈÓëÔ˶¯·½ÏòµÄ¼Ð½Ç¾ùΪÈñ½Ç£¬ºÏÁ¦×öÕý¹¦£»¶øºóÒ»¹ý³ÌÖкÏÁ¦ÓëÔ˶¯·½Ïò¼Ð½ÇΪ¶Û½Ç£¬ºÏÁ¦×ö¸º¹¦£»¹Ê´ÓNµ½PµÄ¹ý³ÌÖУ¬ËÙÂÊÏÈÔö´óºó¼õС£»¹ÊB´íÎó£»
C¡¢´Óaµ½PСÇòËÙÂÊÏÈÔö´óºó¼õÉÙ£¬Ôòµ¯Á¦ÊÇÏÈÔö´óºó¼õÉÙ£¬¹ÊCÕýÈ·£»
D¡¢´ÓPµ½QµÄ¹ý³ÌÖУ¬Óɶ¯Äܶ¨Àí¿ÉÖª£¬-mgh-WE=0-$\frac{1}{2}$mv2£»¹Ê¶¯ÄܵļõСÁ¿µÈÓÚÖØÁ¦ÊÆÄÜÔö¼ÓÁ¿ºÍµçÊÆÄܵÄÔö¼ÓÁ¿£»¹ÊDÕýÈ·£»
¹ÊÑ¡£ºACD£®
µãÆÀ ±¾Ì⿼²é¹¦ÄܹØϵ£¬Òª×¢ÒâÃ÷È·µç³¡Á¦ºÍÖØÁ¦¾ßÓÐÏàͬµÄÐÔÖÊ£¬¼´ÖØÁ¦×ö¹¦Á¿¶ÈÖØÁ¦ÊÆÄܵĸıäÁ¿£»¶øµç³¡Á¦×ö¹¦Á¿¶ÈµçÊÆÄܵĸıäÁ¿
A£® | µãµçºÉ¾ÍÊǵçºÉÁ¿Ð¡ | |
B£® | µãµçºÉ¾ÍÊÇÌå»ýС | |
C£® | µãµçºÉ¾ÍÊÇûÓеçºÉÁ¿ | |
D£® | µãµçºÉÊÇÀíÏ뻯ģÐÍÖ¸µÄÊÇÒ»ÖÖûÓдóСµÄ´øµçÌå |
A£® | $\sqrt{3}$£º2$\sqrt{2}$ | B£® | $\sqrt{2}$£º$\sqrt{3}$ | C£® | $\sqrt{3}$£º$\sqrt{2}$ | D£® | 2$\sqrt{2}$£º$\sqrt{3}$ |
A£® | Õâ5öըµ¯ÔÚÂäµØÇ°£¬ÔÚ¿ÕÖÐÅÅÁгÉÒ»ÌõÅ×ÎïÏß | |
B£® | Õâ5öըµ¯ÔÚÂäµØÇ°£¬ÔÚ¿ÕÖÐÅÅÁгÉÒ»ÌõÊúÖ±Ïß | |
C£® | Õâ5öըµ¯ÔÚÂäµØÇ°£¬Ï໥¼ä¸ô¾àÀë±£³Ö²»±ä | |
D£® | Õâ5öըµ¯ÂäµØµãµÈ¼ä¾à£¬ÇÒ¼ä¾àΪ1000m |
A£® | $\frac{¦Ød}{¦Ð}$ | B£® | $\frac{¦Ød}{2¦Ð}$ | C£® | $\frac{2¦Ød}{¦Ð}$ | D£® | $\frac{3¦Ød}{¦Ð}$ |
A£® | ¼×µÄλÒÆ×î´ó | B£® | ±ûµÄλÒÆ×î´ó | C£® | ÒÒ¡¢±ûµÄ·³ÌÏàµÈ | D£® | ±ûµÄ·³Ì×î´ó |
A£® | Á¦Ô½´ó£¬Î»ÒÆÔ½´ó£¬×ö¹¦¾ÍÔ½¶à | |
B£® | Á¦ºÜ´ó£¬Î»ÒÆÒ²ºÜ´ó£¬Õâ¸öÁ¦×öµÄ¹¦¿ÉÄÜΪÁã | |
C£® | Ò»¶Ô×÷ÓÃÁ¦Óë·´×÷ÓÃÁ¦£¬Èç¹û×÷ÓÃÁ¦×ö¹¦ÎªÁ㣬Ôò·´×÷ÓÃÁ¦×ö¹¦Ò»¶¨ÎªÁã | |
D£® | Á¦Ô½´ó£¬ÔÚÁ¦µÄ·½ÏòÉϵÄλÒÆÔ½´ó£¬Õâ¸öÁ¦×öµÄ¹¦Ô½¶à |