Ò»¸ùµ¯ÐÔÉþÑØxÖá·½Ïò·ÅÖã¬×ó¶ËÔÚÔ­µãO£¬ÓÃÊÖÎÕסÉþµÄ×ó¶ËʹÆäÑØyÖá·½Ïò×öÖÜÆÚΪ1 sµÄ¼òгÔ˶¯£¬ÓÚÊÇÔÚÉþÉÏÐγÉÒ»Áмòг²¨¡£Çó£º

£¨1£©Èô´Ó²¨´«µ½Æ½ºâλÖÃÔÚx =" 1" m´¦µÄMÖʵãʱ¿ªÊ¼¼Æʱ£¬ÄÇô¾­¹ýµÄʱ¼äµÈÓÚ¶àÉÙʱ£¬Æ½ºâλÖÃÔÚx =" 4.5" m´¦µÄNÖʵãÇ¡ºÃµÚÒ»´ÎÑØyÖáÕý·½Ïòͨ¹ýƽºâλÖã¿
£¨2£©ÔÚͼÖл­³öµ±NÖʵãÇ¡ºÃµÚÒ»´ÎÑØyÖáÕý·½Ïòͨ¹ýƽºâλÖÃʱµ¯ÐÔÉþÉϵIJ¨ÐΡ£
£¨1£©2.25 s£¨2£©
£¨8·Ö£©£¨1£©Óɲ¨¶¯Í¼ÏóÖª£¬²¨³¤=" 2" m  £¨1·Ö£©
ÒÑÖªs  Ôò £¨1·Ö£©
²¨´Óx =" 1" m´«ÖÁx =" 4.5" m´¦µÄNÖʵãÐèÒªµÄʱ¼ä £¨1·Ö£©
´Ëʱx =" 4.5" m´¦µÄNÖʵãÕýÏòyÖḺ·½ÏòÔ˶¯  
x =" 4.5" m´¦µÄNÖʵãÇ¡ºÃµÚÒ»´ÎÑØyÖáÕýÏòͨ¹ýƽºâλÖû¹Ðè £¨1·Ö£©
Òò´Ë= + =" 2.25" s  £¨1·Ö£©
£¨2£©£¨3·Ö£©²¨ÐÎÈçͼ£º

±¾Ì⿼²éµÄÊǶԻúе²¨µÄÀí½â£¬¸ù¾Ý²¨³¤ºÍ²¨ËٵĹØϵºÍͼÏñ¶Ô±È¿ÉÒÔºÜÈÝÒ×Ëã³ö½á¹û£»
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÎÊ´ðÌâ

Ò»¼òг²¨µÄ²¨Ô´ÔÚ×ø±êÔ­µão´¦£¬¾­¹ýÒ»¶Îʱ¼äÕñ¶¯´ÓoµãÏòÓÒ´«²¥20cmµ½Qµã£¬ÈçͼËùʾ£¬PµãÀ뿪oµãµÄ¾àÀëΪ30cm£¬ÊÔÅжÏPÖʵ㿪ʼÕñ¶¯µÄ·½Ïò¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºÊµÑéÌâ

(8·Ö)ijʵÑéÊÒÖÐÐü¹Ò×ÅÒ»µ¯»ÉÕñ×ÓºÍÒ»µ¥°Ú£¬µ¯»ÉÕñ×ӵĵ¯»ÉºÍСÇò(ÇòÖмäÓп×)¶¼Ì×Ôڹ̶¨µÄ¹â»¬ÊúÖ±¸ËÉÏ£®Ä³´ÎÓиеØÕðÖй۲쵽¾²Ö¹µÄÕñ×Ó¿ªÊ¼Õñ¶¯4.0 sºó£¬µ¥°Ú²Å¿ªÊ¼°Ú¶¯£®´Ë´ÎµØÕðÖÐͬһÕðÔ´²úÉúµÄµØÕð×ݲ¨ºÍºá²¨µÄ²¨³¤·Ö±ðΪ10 kmºÍ5.0 km£¬ÆµÂÊΪ1.0 Hz.¼ÙÉè¸ÃʵÑéÊÒÇ¡ºÃλÓÚÕðÔ´µÄÕýÉÏ·½£¬ÇóÕðÔ´ÀëʵÑéÊҵľàÀ룮

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºµ¥Ñ¡Ìâ

ͼ5-1ΪһÁмòг²¨ÔÚt=1sʱµÄ²¨ÐÎͼ£¬Í¼5-2ÊÇÕâÁв¨ÖÐPµã£¨x=200cm´¦£©µÄÕñ¶¯ ͼÏó£¬ÄÇô¸Ã²¨µÄ´«²¥ËٶȺʹ«²¥·½ÏòÊÇ£¨   £©?
A£®v="25" cm/s£¬Ïò×ó´«²¥B£®v="50" cm/s£¬Ïò×ó´«²¥?
C£®v="25" cm/s£¬ÏòÓÒ´«²¥?D£®v="50" cm/s£¬ÏòÓÒ´«²¥?

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£º¼ÆËãÌâ

Ò»ÁкᲨÔÚÖáÉÏ´«²¥£¬t1=0ºÍt2=0.05sʱµÄ²¨ÐηֱðÈçÏÂͼÖеÄʵÏߺÍÐéÏßËùʾ¡£
£¨1£©Èô²¨ÏòÓÒ´«²¥£¬ÇÒÖÜÆÚ´óÓÚ(t2-t1)£¬Çó²¨ËÙ¡£
£¨2£©ÉèÖÜÆÚ´óÓÚ(t2-t1)£¬ÇÒ²¨ËÙΪ£¬Ç󲨵Ĵ«²¥·½Ïò¡£

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºµ¥Ñ¡Ìâ

ÈçͼËùʾ£¬¼×Ϊijһ²¨ÔÚt£½0.5 sʱµÄ²¨ÐÎͼÏó£¬ÒÒΪ²ÎÓë¸Ã²¨¶¯µÄPÖʵãµÄÕñ¶¯Í¼Ïó£®
A£®¸Ã²¨Ïò×ó´«²¥
B£®¸Ã²¨ÏòÓÒ´«²¥
C£®ÔÙ¹ý2.5 s¸Ã²¨»áÑØ´«²¥·½ÏòÏòÇ°´«²¥10m
D£®ÔÙ¹ý2.5 s PÖʵã×ß¹ýµÄ·³ÌÊÇ10m

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºµ¥Ñ¡Ìâ

Ò»Áмòгºá²¨ÑØxÖá´«²¥£¬t=0ʱ¿ÌµÄ²¨ÐÎÈçͼËùʾ¡£Ôò´ÓͼÖпÉÒÔ¿´³ö£º
A£®ÕâÁв¨µÄ²¨³¤Îª5m
B£®²¨ÖеÄÿ¸öÖʵãµÄÕñ¶¯ÖÜÆÚΪ4s
C£®ÈôÒÑÖª²¨ÑØxÖáÕýÏò´«²¥£¬Ôò´ËʱÖʵãaÏò
ÏÂÕñ¶¯
D£®ÈôÒÑÖªÖʵãb´ËʱÏòÉÏÕñ¶¯£¬Ôò²¨ÊÇÑØxÖḺÏò´«²¥µÄ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£º¼ÆËãÌâ

Ò»ÁÐÑØxÖáÕý·½Ïò´«²¥µÄ¼òгºá²¨£¬Ô­µãx=0´¦Îª²¨Ô´£¬´Ó²¨Ô´¿ªÊ¼Õñ¶¯¼Æʱ£¬ÔÚt=6sʱ²¨Ç¡ºÃ´«²¥µ½Pµã£¬Èçͼ17Ëùʾ¡£Çó£º
£¨1£©²¨Ô´¿ªÊ¼Õñ¶¯Ê±µÄÕñ¶¯·½Ïò¼°²¨µÄ´«²¥Ëٶȣ»
£¨2£©ÔÙ¾­¹ý¶àÉÙʱ¼ä£¬Î»ÓÚx =" 8" cm´¦µÄQµãÇ¡ºÃµÚ3´ÎλÓÚ²¨¹È£¿

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£º¼ÆËãÌâ

ijʱ¿ÌµÄ²¨ÐÎͼÈçÓÒËùʾ£¬²¨ÑØxÖḺ·½Ïò´«²¥£¬ÖʵãPµÄ×ø±êΪx=0.32m¡£Çó£º

£¨1£©´Ó´Ëʱ¿Ì¿ªÊ¼¼Æʱ£¬Pµã¾­¹ý2s»Øµ½Æ½ºâλÖã¬Çó²¨ËÙ£»
£¨2£©Èô´ËÁв¨µÄÖÜÆÚΪ2s£¬Ôò´Ó´Ëʱ¿Ì¿ªÊ¼¼Æʱ£¬ÊÔд³ö×÷ΪΪx=0.2mµÄÖʵãµÄλÒÆÓëʱ¼äµÄ¹Øϵʽ¡£

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸