ÈçͼËùʾ£¬Í¼ÖÐa¡¢b¡¢c¡¢dËÄÌõÔ²¹ìµÀµÄÔ²ÐľùÔÚµØÇòµÄ×ÔתÖáÉÏ£¨ÆäÖйìµÀaÓë³àµÀ¹²Ã棬¹ìµÀb¡¢c¡¢dµÄÔ²ÐÄÓëµØÐÄÖغϣ©£¬ÔòÏÂÁÐ˵·¨ÖÐÕýÈ·ÊÇ
[     ]
A£®Í¬²½ÎÀÐǵĹìµÀ¿ÉÒÔÊǹìµÀd
B£®ÎÀÐDz»¿ÉÄÜÔÚ¹ìµÀbÈƵØÇò×öÔÈËÙÔ²ÖÜÔ˶¯
C£®ÎÀÐÇ¿ÉÄÜÔÚ¹ìµÀa ÈƵØÇò×öÔÈËÙÔ²ÖÜÔ˶¯ÇÒÓëµØÇò±íÃæÏà¶Ô¾²Ö¹
D£®ÈôÔ²¹ìµÀa¡¢cµÄ°ë¾¶Ra=Rc£¬ÔòÔÚ¹ìµÀaºÍcÉÏÈƵØÇò×öÔÈËÙÔ²ÖÜÔ˶¯µÄÎÀÐǵÄÖÜÆÚTa=Tc
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2011?°²»Õһģ£©Ò»¶ÔµÈÁ¿ÕýµãµçºÉµç³¡µÄµç³¡Ïߣ¨ÊµÏߣ©ºÍµÈÊÆÏߣ¨ÐéÏߣ©ÈçͼËùʾ£¬Í¼ÖÐA¡¢BÁ½µãµç³¡Ç¿¶È·Ö±ðÊÇEA¡¢EB£¬µçÊÆ·Ö±ðÊǦÕA¡¢¦ÕB£¬¸ºµçºÉqÔÚA¡¢BʱµÄµçÊÆÄÜ·Ö±ðÊÇEPA¡¢EPB£¬ÏÂÁÐÅжÏÕýÈ·µÄÊÇ£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÈçͼËùʾ£¬Í¼ÖÐʵÏßÊÇÒ»´Øδ±êÃ÷·½ÏòµÄÓɵãµçºÉ²úÉúµÄµç³¡Ïߣ¬ÐéÏßÊÇijһ´øµçÁ£×Óͨ¹ý¸Ãµç³¡ÇøÓòʱµÄÔ˶¯¹ì¼££¬a¡¢bÊǹ켣ÉϵÄÁ½µã£¬ÈôÁ£×ÓÔÚÔ˶¯ÖÐÖ»Êܵ糡Á¦×÷Ó㮸ù¾Ý´ËͼÄÜ×÷³öÕýÈ·ÅжϵÄÊÇ£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚÓõç»ð»¨¼ÆʱÆ÷¡°Ñо¿ÔȱäËÙÖ±ÏßÔ˶¯¡±µÄʵÑéÖУ¬¼Ç¼С³µÔ˶¯Çé¿öµÄÖ½´øÈçͼËùʾ£¬Í¼ÖÐA¡¢B¡¢C¡¢D¡¢EΪÏàÁڵļÆÊýµã£¬ÏàÁÚ¼ÆÊýµã¼ä»¹ÓÐËĸöµãδ»­³ö£®
£¨1£©µç»ð»¨¼ÆʱÆ÷´òÏÂB¡¢C¡¢DÈýµãʱ£¬Ð¡³µµÄËÙ¶ÈΪ£ºvB=
1.38
1.38
m/s£¬vC=
2.64
2.64
m/s£¬vD=
3.90
3.90
m/s£®
£¨2£©ÓÃÇóµÃµÄÊýÖµ£¬ÔÚͼÖÐ×ø±êÖ½ÉÏ×÷³öС³µµÄv-tͼÏó£¨ÒÔ´òAµãʱ¿ªÊ¼¼Çʱ£©£®
£¨3£©Ð¡³µÔ˶¯µÄ¼ÓËÙ¶Èa=
12.6
12.6
m/s2£®
£¨4£©Í¼ÏóÔÚ×ÝÖáÉϽؾàµÄÎïÀíÒâÒåÊÇ£º
´òµã¼ÆʱÆ÷´òϼÆʱµãAʱֽ´ø¶ÔÓ¦µÄËÙ¶È
´òµã¼ÆʱÆ÷´òϼÆʱµãAʱֽ´ø¶ÔÓ¦µÄËÙ¶È
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2010?³¤ÄþÇø¶þÄ££©Ä³Í¬Ñ§ÀûÓùâµçÃÅ´«¸ÐÆ÷Éè¼ÆÁËÒ»¸öÑо¿Ð¡ÎïÌå×ÔÓÉÏÂÂäʱ»úеÄÜÊÇ·ñÊغãµÄʵÑ飬ʵÑé×°ÖÃÈçͼËùʾ£¬Í¼ÖÐA¡¢BÁ½Î»Ö÷ֱð¹Ì¶¨ÁËÁ½¸ö¹âµçÃÅ´«¸ÐÆ÷£®ÊµÑéʱ²âµÃСÎïÌåÉÏ¿í¶ÈΪdµÄµ²¹âƬͨ¹ýAµÄµ²¹âʱ¼äΪt1£¬Í¨¹ýBµÄµ²¹âʱ¼äΪt2£®ÎªÁËÖ¤Ã÷СÎïÌåͨ¹ýA¡¢BʱµÄ»úеÄÜÏàµÈ£¬»¹ÐèÒª½øÐÐһЩʵÑé²âÁ¿ºÍÁÐʽ֤Ã÷£®
£¨1£©£¨µ¥Ñ¡£©Ñ¡³öÏÂÁбØÒªµÄʵÑé²âÁ¿²½Ö裺
B
B

A£®ÓÃÌìƽ²â³öÔ˶¯Ð¡ÎïÌåµÄÖÊÁ¿m
B£®²â³öA¡¢BÁ½´«¸ÐÆ÷Ö®¼äµÄÊúÖ±¾àÀëh
C£®²â³öСÎïÌåÊÍ·ÅʱÀë×ÀÃæµÄ¸ß¶ÈH
D£®ÓÃÃë±í²â³öÔ˶¯Ð¡ÎïÌåͨ¹ýA¡¢BÁ½´«¸ÐÆ÷µÄʱ¼ä¡÷t
£¨2£©Èô¸ÃͬѧÓÃdºÍtµÄ±ÈÖµÀ´·´Ó³Ð¡ÎïÌå¾­¹ýA¡¢B¹âµçÃÅʱµÄËٶȣ¬²¢ÉèÏëÈç¹ûÄÜÂú×ã
(
d
t2
)2-(
d
t1
)2=2gh
(
d
t2
)2-(
d
t1
)2=2gh
¹Øϵʽ£¬¼´ÄÜÖ¤Ã÷ÔÚ×ÔÓÉÂäÌå¹ý³ÌÖÐСÎïÌåµÄ»úеÄÜÊÇÊغãµÄ£®
£¨3£©¸ÃͬѧµÄʵÑéÉè¼Æ¿ÉÄÜ»áÒýÆðÃ÷ÏÔÎó²îµÄµØ·½ÊÇ£¨Çëд³öÒ»ÖÖ£©£º
ÎïÌåµ²¹âµÄ¿í¶Èd²»ÄÜÌ«´ó»òhµÄ²âÁ¿²»×¼£¨ÆäËü˵·¨ÕýÈ·Ò²¿É£©
ÎïÌåµ²¹âµÄ¿í¶Èd²»ÄÜÌ«´ó»òhµÄ²âÁ¿²»×¼£¨ÆäËü˵·¨ÕýÈ·Ò²¿É£©
£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010-2011ѧÄêÕã½­Ê¡¸ßÈý¸ß¿¼Ä£ÄâÊÔÌ⣨Àí×Û£©ÎïÀí²¿·Ö ÌâÐÍ£ºÊµÑéÌâ

ijͬѧÀûÓùâµçÃÅ´«¸ÐÆ÷Éè¼ÆÁËÒ»¸öÑо¿Ð¡ÎïÌå×ÔÓÉÏÂÂäʱ»úеÄÜÊÇ·ñÊغãµÄʵÑ飬ʵÑé×°ÖÃÈçͼËùʾ£¬Í¼ÖÐA¡¢BÁ½Î»Ö÷ֱð¹Ì¶¨ÁËÁ½¸ö¹âµçÃÅ´«¸ÐÆ÷£®ÊµÑéʱ²âµÃСÎïÌåÉÏ¿í¶ÈΪdµÄµ²¹âƬͨ¹ýAµÄµ²¹âʱ¼äΪt1£¬Í¨¹ýBµÄµ²¹âʱ¼äΪt2£®ÎªÁËÖ¤Ã÷СÎïÌåͨ¹ýA¡¢BʱµÄ»úеÄÜÏàµÈ£¬»¹ÐèÒª½øÐÐһЩʵÑé²âÁ¿ºÍÁÐʽ֤Ã÷£®

£¨1£©Ñ¡³öÏÂÁбØÒªµÄʵÑé²âÁ¿²½Ö裨     £©

A£®ÓÃÌìƽ²â³öÔ˶¯Ð¡ÎïÌåµÄÖÊÁ¿m

B£®²â³öA¡¢BÁ½´«¸ÐÆ÷Ö®¼äµÄÊúÖ±¾àÀëh£¨Èçͼʾ£©

C£®²â³öСÎïÌåÊÍ·ÅʱÀë×ÀÃæµÄ¸ß¶ÈH

D£®²â³öÔ˶¯Ð¡ÎïÌåͨ¹ýA¡¢BÁ½´«¸ÐÆ÷µÄʱ¼ä¡÷t

£¨2£©Èç¹ûʵÑéÄÜÂú×ã________________________¹Øϵʽ£¨ÓÃËù²âµÄÎïÀíÁ¿±í´ï£©£¬ÔòÖ¤Ã÷ÔÚ×ÔÓÉÂäÌå¹ý³ÌÖÐСÎïÌåµÄ»úеÄÜÊÇÊغãµÄ¡£

£¨3£©¸ÃͬѧÉè¼Æ¿ÉÄÜ»áÒýÆðÃ÷ÏÔÎó²îµÄµØ·½ÊÇ£¨Çëд³öÒ»ÖÖ£©£º 

______________________________________________________________£®

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸