ÈçͼËùʾ£¬¾²Ö¹·ÅÔÚˮƽ×ÀÃæÉϵÄÖ½´ø£¬ÆäÉÏÓÐÒ»ÖÊÁ¿Îªm=0.1 kgµÄÌú¿é£¬ËüÓëÖ½´øÓҶ˵ľàÀëΪL=0.5m£¬ËùÓнӴ¥ÃæÖ®¼äµÄ¶¯Ä¦²ÁÒòÊýÏàͬ¡£ÏÖÓÃˮƽÏò×óµÄºãÁ¦£¬¾­2sʱ¼ä½«Ö½´ø´ÓÌú¿éϳé³ö£¬µ±Ö½´øÈ«²¿³é³öʱÌú¿éÇ¡ºÃµ½´ï×ÀÃæ±ßÔµÇÒËÙ¶ÈΪv=2m/s¡£ÒÑÖª×ÀÃæ¸ß¶ÈΪH=0.8m£¬²»¼ÆÖ½´øÖØÁ¦£¬Ìú¿éÊÓΪÖʵ㡣ÖØÁ¦¼ÓËÙ¶ÈgÈ¡10m/s2£¬Ç󣺠 
£¨1£©Ìú¿éÅ׳öºóÂäµØµãÀëÅ׳öµãµÄˮƽ¾àÀ룻  
£¨2£©¶¯Ä¦²ÁÒòÊý£»  
£¨3£©Ö½´ø³é³ö¹ý³ÌÖÐϵͳ²úÉúµÄÄÚÄÜ¡£
½â£º£¨1£©ÉèÌú¿éÀ뿪×ÀÃæºó¾­Ê±¼ätÂäµØ
ˮƽ·½Ïò£ºx£½vt  ¢Ù
ÊúÖ±·½Ïò£ºH£½gt2   ¢Ú
ÓÉ¢Ù¢ÚÁªÁ¢½âµÃ£ºx=0.8 m
£¨2£©ÉèÌú¿éµÄ¼ÓËÙ¶ÈΪa1£¬Ô˶¯Ê±¼äΪt1£¬ÓÉÅ£¶ÙµÚ¶þ¶¨ÂÉ£¬µÃ¦Ìmg£½ma1 ¢Û
Ö½´ø³é³öʱ£¬Ìú¿éµÄËÙ¶Èv£½a1t1 ¢Ü
¢Û¢ÜÁªÁ¢½âµÃ¦Ì=0.1
£¨3£©Ìú¿éµÄλÒÆx1£½a1t12  ¢Ý  
ÉèÖ½´øµÄλÒÆΪx2£»ÓÉÌâÒâÖª£¬x2£­x1£½L   ¢Þ
Óɹ¦ÄܹØϵ¿ÉµÃÖ½´ø³é³ö¹ý³ÌÖÐϵͳ²úÉúµÄÄÚÄÜE£½¦Ìmgx2£«¦ÌmgL ¢ß
ÓɢۢܢݢޢßÁªÁ¢½âµÃE£½0.3 J
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÔÚÑо¿Ä¦²ÁÁ¦µÄʵÑéÖУ¬ÈçͼËùʾ£¬Óõ¯»É³ÓˮƽÀ­Ò»·ÅÔÚˮƽ×ÀÃæÉϵÄСľ¿é£¬Ð¡Ä¾¿éµÄÔ˶¯×´Ì¬¼°µ¯»É³ÓµÄ¶ÁÊýÈç±í¸ñËùʾ£¨Ã¿´ÎʵÑéʱ£¬Ä¾¿éÓë×ÀÃæµÄ½Ó´¥ÃæÏàͬ£©£®ÔòÓɱí·ÖÎö¿ÉÖª£¨¡¡¡¡£©
ʵÑé´ÎÊý Ô˶¯×´Ì¬ µ¯»É³Ó¶ÁÊý/N
1 ¾²Ö¹ 0.4
2 ¾²Ö¹ 0.6
3 ¼ÓËÙ 0.7
4 ÔÈËÙ 0.5
5 ¼õËÙ 0.3

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

ÈçͼËùʾ£¬×°ÓÐÊÊÁ¿Ë®µÄ²£Á§±­¿Ú·ÅÉÏӲֽƬ£¬ÏÖ½«¼¦µ°·ÅÔÚӲֽƬÉÏ£¬ÓÃÊÖָͻȻµ¯»÷ӲֽƬ£¬²úÉúµÄ½á¹ûÊÇ£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010-2011ѧÄê½­ËÕÊ¡ÑγÇÖÐѧ¸ß¶þ£¨ÉÏ£©ÆÚÄ©ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ÔÚÑо¿Ä¦²ÁÁ¦µÄʵÑéÖУ¬ÈçͼËùʾ£¬Óõ¯»É³ÓˮƽÀ­Ò»·ÅÔÚˮƽ×ÀÃæÉϵÄСľ¿é£¬Ð¡Ä¾¿éµÄÔ˶¯×´Ì¬¼°µ¯»É³ÓµÄ¶ÁÊýÈç±í¸ñËùʾ£¨Ã¿´ÎʵÑéʱ£¬Ä¾¿éÓë×ÀÃæµÄ½Ó´¥ÃæÏàͬ£©£®ÔòÓɱí·ÖÎö¿ÉÖª£¨ £©
ʵÑé´ÎÊýÔ˶¯×´Ì¬µ¯»É³Ó¶ÁÊý/N
1¾²Ö¹0.4
2¾²Ö¹0.6
3¼ÓËÙ0.7
4ÔÈËÙ0.5
5¼õËÙ0.3


A£®Ä¾¿éÊܵ½µÄ×î´ó¾²Ä¦²ÁÁ¦Îª0.7N
B£®Ä¾¿éÊܵ½µÄ×î´ó¾²Ä¦²ÁÁ¦¿ÉÄÜΪ0.6N
C£®ÔÚÕâÎå´ÎʵÑéÖУ¬Ä¾¿éÊܵ½µÄĦ²ÁÁ¦´óСÓÐÈý´ÎÊÇÏàͬµÄ
D£®ÔÚÕâÎå´ÎʵÑéÖУ¬Ä¾¿éÊܵ½µÄĦ²ÁÁ¦´óСֻÓÐÁ½´ÎÊÇÏàͬµÄ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010-2011ѧÄêºÓ±±Ê¡ÀÈ·»Ò»ÖиßÒ»£¨Ï£©µÚÒ»´ÎÔ¿¼ÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ÔÚÑо¿Ä¦²ÁÁ¦µÄʵÑéÖУ¬ÈçͼËùʾ£¬Óõ¯»É³ÓˮƽÀ­Ò»·ÅÔÚˮƽ×ÀÃæÉϵÄСľ¿é£¬Ð¡Ä¾¿éµÄÔ˶¯×´Ì¬¼°µ¯»É³ÓµÄ¶ÁÊýÈç±í¸ñËùʾ£¨Ã¿´ÎʵÑéʱ£¬Ä¾¿éÓë×ÀÃæµÄ½Ó´¥ÃæÏàͬ£©£®ÔòÓɱí·ÖÎö¿ÉÖª£¨ £©
ʵÑé´ÎÊýÔ˶¯×´Ì¬µ¯»É³Ó¶ÁÊý/N
1¾²Ö¹0.4
2¾²Ö¹0.6
3¼ÓËÙ0.7
4ÔÈËÙ0.5
5¼õËÙ0.3


A£®Ä¾¿éÊܵ½µÄ×î´ó¾²Ä¦²ÁÁ¦Îª0.7N
B£®Ä¾¿éÊܵ½µÄ×î´ó¾²Ä¦²ÁÁ¦¿ÉÄÜΪ0.6N
C£®ÔÚÕâÎå´ÎʵÑéÖУ¬Ä¾¿éÊܵ½µÄĦ²ÁÁ¦´óСÓÐÈý´ÎÊÇÏàͬµÄ
D£®ÔÚÕâÎå´ÎʵÑéÖУ¬Ä¾¿éÊܵ½µÄĦ²ÁÁ¦´óСֻÓÐÁ½´ÎÊÇÏàͬµÄ

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º¡¶µÚ4Õ Á¦ÓëÔ˶¯¡·2012Äêµ¥Ôª²âÊÔ¾í£¨ËþË®ÖÐѧ£©£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

ÈçͼËùʾ£¬×°ÓÐÊÊÁ¿Ë®µÄ²£Á§±­¿Ú·ÅÉÏӲֽƬ£¬ÏÖ½«¼¦µ°·ÅÔÚӲֽƬÉÏ£¬ÓÃÊÖָͻȻµ¯»÷ӲֽƬ£¬²úÉúµÄ½á¹ûÊÇ£¨ £©

A£®¼¦µ°ËæֽƬһÆð·É³öÈ¥
B£®Ö½Æ¬¡¢¼¦µ°ºÍ±­Ò»Æðµ¹ÏÂ
C£®Ö½Æ¬·É³ö£¬±­ºÍ¼¦µ°¾²Ö¹²»¶¯
D£®Ö½Æ¬·É³ö£¬¼¦µ°ÂäÈë±­ÄÚË®ÖÐ

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸