£¨1£©Ò»ÁÐÑØxÖá´«²¥µÄ¼òгºá²¨£¬t=0ʱ²¨µÄͼÏóÈçͼ1Ëùʾ£¬ÖʵãMÑØyÖáµÄÕý·½ÏòÔ˶¯£¬ÔòÕâÁв¨µÄ²¨³¤ÊÇ______£¬´«²¥·½ÏòÊÇ______£»ÔÚÒ»¸öÖÜÆÚÄÚ£¬ÖʵãMͨ¹ýµÄ·³ÌÊÇ______£®
£¨2£©Èçͼ2Ëùʾ£¬Æ½ÃæMNÊǽéÖÊÓëÕæ¿ÕµÄ½»½çÃ棬½éÖÊÖÐÓÐÒ»µãA£¬Õæ¿ÕÖÐÓÐÒ»µãB£¬PÊÇA¡¢BÁ¬ÏßÓë½çÃæµÄ½»µã£®Èç¹ûÓÉAµã·¢³öµÄÒ»Êø¼¤¹â£¬Éäµ½½çÃæÉϵÄQµã£¨Í¼ÖÐδ»­³ö£©£¬½øÈëÕæ¿Õºó¾­¹ýBµã£®ÔòQµãÔÚPµãµÄ______£¨Ìî¡°×ó²à¡±»ò¡°ÓҲࡱ£©£®
£¨3£©»ð³µÏò¹Û²ìÕ߸ßËÙÊ»À´Ê±£¬¹Û²ìÕßÌýµ½»ð³µÆûµÑÉùµÄÒôµ÷______£¨Ìî¡°±ä¸ß¡±¡¢¡°±äµÍ¡±»ò¡°²»±ä¡±£©£®

¡¾´ð°¸¡¿·ÖÎö£º£¨1£©ÏàÁÚÁ½¸ö²¨·å»ò²¨¹È¼äµÄ¾àÀëµÈÓÚ²¨³¤£¬ÓÉͼֱ½Ó¶Á³ö£®ÖʵãMÏòÉÏÔ˶¯£¬ÆäÕñ¶¯±ÈÓÒ²àÁÚ½üµÄ²¨·å³Ù£¬¼´¿ÉÖªµÀ²¨ÑØxÖḺ·½Ïò£®¼òг²¨´«²¥ÖУ¬Õñ¶¯Öʵã×ö¼òгÔ˶¯£¬ÖʵãÔÚÒ»¸öÖÜÆÚÄÚͨ¹ýµÄ·³ÌµÈÓÚËĸöÕñ·ù£®
£¨2£©¸ù¾Ý¹â´Ó½éÖÊÉäÈëÕæ¿ÕÕÛÉäʱ£¬ÕÛÉä½Ç´óÓÚÈëÉä½Ç£¬×÷³ö¹â·ͼ£¬È·¶¨QµãµÄλÖã®
£¨2£©»ð³µÏò¹Û²ìÕ߸ßËÙÊ»À´Ê±£¬²úÉú¶àÆÕÀÕЧӦ£¬¸ù¾Ý¾àÀë¼õС£¬¹Û²ìÕß½ÓÊܵ½µÄÉùÒôƵÂʱä¸ß£¬¶øƵÂʾö¶¨ÁËÒôµ÷£®
½â´ð£º½â£º£¨1£©ÏàÁÚÁ½¸ö²¨·å»ò²¨¹È¼äµÄ¾àÀëµÈÓÚ²¨³¤£¬ÓÉͼ֪£º²¨³¤¦Ë=20m£®
t=0ʱ¿Ì£¬ÖʵãMÑØyÖáµÄÕý·½ÏòÔ˶¯£¬Õñ¶¯±ÈÓÒ²àÁÚ½üµÄ²¨·å³Ù£¬¹Ê²¨ÑØxÖḺ·½Ïò£®
ÔÚÒ»¸öÖÜÆÚÄÚ£¬ÖʵãMͨ¹ýµÄ·³ÌÊÇS=4A=4×2cm=8cm£®
£¨2£©¹â´Ó½éÖÊÉäÈëÕæ¿ÕÕÛÉäʱ£¬ÕÛÉä½Ç´óÓÚÈëÉä½Ç£¬×÷³ö¹â·ͼ£¬ËùÒÔQµãÔÚPµãµÄ×ó²à£®
£¨3£©»ð³µÏò¹Û²ìÕ߸ßËÙÊ»À´Ê±£¬²úÉú¶àÆÕÀÕЧӦ£¬ÓÉÓÚ¾àÀë¼õС£¬¹Û²ìÕß½ÓÊܵ½µÄÉùÒôƵÂʱä¸ß£¬ÔòÒôµ÷±ä¸ß£®
¹Ê´ð°¸Îª£º£¨1£©20cm£¬ÑØxÖḺ·½Ïò£¬8cm£¬£¨2£©×ó²à£¬£¨3£©±ä¸ß£®
µãÆÀ£º±¾Ì⿼²éÁ˲¨¶¯Í¼ÏóµÄÀí½â£¬¹âµÄÕÛÉä¹æÂɺͶàÆÕÀÕЧӦ£¬¶¼ÊDz¨¶¯²¿·Ö»ù±¾ÖªÊ¶£¬Òª¶à×öÁ·Ï°£¬´òÀλù´¡£¬ÄѶȲ»´ó£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

¾«Ó¢¼Ò½ÌÍø£¨1£©Ò»ÁÐÑØxÖá´«²¥µÄ¼òгºá²¨£¬t=0ʱ²¨µÄͼÏóÈçͼ1Ëùʾ£¬ÖʵãMÑØyÖáµÄÕý·½ÏòÔ˶¯£¬ÔòÕâÁв¨µÄ²¨³¤ÊÇ
 
£¬´«²¥·½ÏòÊÇ
 
£»ÔÚÒ»¸öÖÜÆÚÄÚ£¬ÖʵãMͨ¹ýµÄ·³ÌÊÇ
 
£®
£¨2£©Èçͼ2Ëùʾ£¬Æ½ÃæMNÊǽéÖÊÓëÕæ¿ÕµÄ½»½çÃ棬½éÖÊÖÐÓÐÒ»µãA£¬Õæ¿ÕÖÐÓÐÒ»µãB£¬PÊÇA¡¢BÁ¬ÏßÓë½çÃæµÄ½»µã£®Èç¹ûÓÉAµã·¢³öµÄÒ»Êø¼¤¹â£¬Éäµ½½çÃæÉϵÄQµã£¨Í¼ÖÐδ»­³ö£©£¬½øÈëÕæ¿Õºó¾­¹ýBµã£®ÔòQµãÔÚPµãµÄ
 
£¨Ìî¡°×ó²à¡±»ò¡°ÓҲࡱ£©£®
£¨3£©»ð³µÏò¹Û²ìÕ߸ßËÙÊ»À´Ê±£¬¹Û²ìÕßÌýµ½»ð³µÆûµÑÉùµÄÒôµ÷
 
£¨Ìî¡°±ä¸ß¡±¡¢¡°±äµÍ¡±»ò¡°²»±ä¡±£©£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

[ÎïÀíÑ¡ÐÞÄ£¿é3-4]
£¨1£©Ò»ÁÐÑØxÖá´«²¥µÄ¼òгºá¶É£®t=0ʱ¿ÌµÄ²¨ÐÎÈçͼ1ÖÐʵÏßËùʾ£¬t=0.3sʱ¿ÌµÄ²¨ÐÎÈçͼÖÐÐéÏßËùʾ£¬ÔòÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ
 
£®
A£®²¨µÄ´«²¥·½ÏòÒ»¶¨ÏòÓÒ
B£®²¨µÄƵÂÊ¿ÉÄÜΪ7.5H2
C£®²¨µÄÖÜÆÚ¿ÉÄÜΪ0.5s
D£®²¨µÄ´«²¥ËٶȿÉÄÜΪ9.0m/s
E£®²¨µÄÕñ·ùΪ5cm
£¨2£©¿ÕÆøÖÐÓÐÒ»ÕÛÉäÂÊΪ
2
µÄ²£Á§ÖùÌ壬Æäºá½ØÃæ»ýÊÇÔ²ÐĽÇΪ90¡ã¡¢°ë¾¶ÎªRµÄÉÈÐΣ¬Èçͼ2Ëùʾ£¬Ò»ÊøƽÐйâÒÔ45¡ãÈëÉä½ÇÕÕÉäµ½OAÃæÉÏ£¬OBÃ治͸¹â£¬ÈôÖ»¿¼ÂÇÊ×´ÎÈëÉäµ½Ô²»¡ABÃæÉϵĹ⣬ÔòABÃæÉÏÓйâ͸³ö²¿·ÝµÄ»¡³¤Îª¶àÉÙ£¿Çë»­³ö¹â·ͼ£®
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º¹ãÖݶþÄ£ ÌâÐÍ£ºÎÊ´ðÌâ

£¨1£©Ò»ÁÐÑØxÖá´«²¥µÄ¼òгºá²¨£¬t=0ʱ²¨µÄͼÏóÈçͼ1Ëùʾ£¬ÖʵãMÑØyÖáµÄÕý·½ÏòÔ˶¯£¬ÔòÕâÁв¨µÄ²¨³¤ÊÇ______£¬´«²¥·½ÏòÊÇ______£»ÔÚÒ»¸öÖÜÆÚÄÚ£¬ÖʵãMͨ¹ýµÄ·³ÌÊÇ______£®
£¨2£©Èçͼ2Ëùʾ£¬Æ½ÃæMNÊǽéÖÊÓëÕæ¿ÕµÄ½»½çÃ棬½éÖÊÖÐÓÐÒ»µãA£¬Õæ¿ÕÖÐÓÐÒ»µãB£¬PÊÇA¡¢BÁ¬ÏßÓë½çÃæµÄ½»µã£®Èç¹ûÓÉAµã·¢³öµÄÒ»Êø¼¤¹â£¬Éäµ½½çÃæÉϵÄQµã£¨Í¼ÖÐδ»­³ö£©£¬½øÈëÕæ¿Õºó¾­¹ýBµã£®ÔòQµãÔÚPµãµÄ______£¨Ìî¡°×ó²à¡±»ò¡°ÓҲࡱ£©£®
£¨3£©»ð³µÏò¹Û²ìÕ߸ßËÙÊ»À´Ê±£¬¹Û²ìÕßÌýµ½»ð³µÆûµÑÉùµÄÒôµ÷______£¨Ìî¡°±ä¸ß¡±¡¢¡°±äµÍ¡±»ò¡°²»±ä¡±£©£®
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2012ÄêºÓ±±Ê¡ºâË®ÊйʳÇÏØÖ£¿ÚÖÐѧ¸ß¿¼ÎïÀíÄ£ÄâÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

[ÎïÀíÑ¡ÐÞÄ£¿é3-4]
£¨1£©Ò»ÁÐÑØxÖá´«²¥µÄ¼òгºá¶É£®t=0ʱ¿ÌµÄ²¨ÐÎÈçͼ1ÖÐʵÏßËùʾ£¬t=0.3sʱ¿ÌµÄ²¨ÐÎÈçͼÖÐÐéÏßËùʾ£¬ÔòÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ______£®
A£®²¨µÄ´«²¥·½ÏòÒ»¶¨ÏòÓÒ
B£®²¨µÄƵÂÊ¿ÉÄÜΪ7.5H2
C£®²¨µÄÖÜÆÚ¿ÉÄÜΪ0.5s
D£®²¨µÄ´«²¥ËٶȿÉÄÜΪ9.0m/s
E£®²¨µÄÕñ·ùΪ5cm
£¨2£©¿ÕÆøÖÐÓÐÒ»ÕÛÉäÂÊΪµÄ²£Á§ÖùÌ壬Æäºá½ØÃæ»ýÊÇÔ²ÐĽÇΪ90°¡¢°ë¾¶ÎªRµÄÉÈÐΣ¬Èçͼ2Ëùʾ£¬Ò»ÊøƽÐйâÒÔ45°ÈëÉä½ÇÕÕÉäµ½OAÃæÉÏ£¬OBÃ治͸¹â£¬ÈôÖ»¿¼ÂÇÊ×´ÎÈëÉäµ½Ô²»¡ABÃæÉϵĹ⣬ÔòABÃæÉÏÓйâ͸³ö²¿·ÝµÄ»¡³¤Îª¶àÉÙ£¿Çë»­³ö¹â·ͼ£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸