£¨1£©Ä³Ñ§Éú×ö¡°Ñé֤ţ¶ÙµÚ¶þ¶¨ÂÉ¡±µÄʵÑéÔÚƽºâĦ²ÁÁ¦Ê±£¬°Ñ³¤Ä¾°åµÄÒ»¶ËµæµÃ¹ý¸ß£¬Ê¹µÃÇã½ÇÆ«´ó£®ËûËùµÃµ½µÄa-F¹Øϵ¿ÉÓÃÏÂÁÐÄĸùͼÏß±íʾ£¿Í¼ÖÐaÊÇС³µµÄ¼ÓËٶȣ¬FÊÇϸÏß×÷ÓÃÓÚС³µµÄÀ­Á¦£®______

£¨2£©ÔÚ¡°Ì½¾¿¼ÓËÙ¶ÈÓëÎïÌåÖÊÁ¿¡¢ÎïÌåÊÜÁ¦µÄ¹Øϵ¡±µÄʵÑéÖУ¬ÒÔÏÂ×ö·¨ÕýÈ·µÄÊÇ______
A£®Æ½ºâĦ²ÁÁ¦Ê±£¬Ó¦½«Ð¡ÅÌÓÃϸÉþͨ¹ý¶¨»¬ÂÖϵÔÚС³µÉÏ
B£®Ã¿´Î¸Ä±äС³µµÄÖÊÁ¿Ê±£¬²»ÐèÒªÖØÐÂƽºâĦ²ÁÁ¦
C£®ÊµÑéʱ£¬ÏÈ·Å¿ªÐ¡³µ£¬ÔÙ½Óͨ´òµã¼ÆʱÆ÷µÄµçÔ´
D£®ÇóС³µÔ˶¯µÄ¼ÓËÙ¶Èʱ£¬¿ÉÓÃÌìƽ²â³öСÅ̺ÍíÀÂëµÄÖÊÁ¿£¨M¡äºÍm¡ä£©ÒÔ¼°Ð¡³µÖÊÁ¿M£¬Ö±½ÓÓù«Ê½a=Êýѧ¹«Ê½gÇó³ö£®

½â£º£¨1£©°Ñ³¤Ä¾°åµÄÒ»¶ËµæµÃ¹ý¸ß£¬Ê¹µÃÇã½ÇÆ«´ó£¬ÄÇôС³µµÄÖØÁ¦ÑØбÃæ·ÖÁ¦¾Í»á´óÓÚĦ²ÁÁ¦£¬ÔÚûÓÐÉþ×ÓÀ­Á¦Ê±£¬Ð¡³µÒÑÓÐÁ˼ÓËٶȣ®¹ÊÑ¡C£®
£¨2£©A¡¢Æ½ºâĦ²ÁÁ¦Ê±£¬Ó¦½«Éþ´ÓС³µÉÏÄÃÈ¥£¬ÇáÇáÍƶ¯Ð¡³µ£¬ÊÇС³µÑØľ°åÔ˶¯£¬Í¨¹ý´òµã¼ÆʱÆ÷´ò³öÀ´µÄÖ½´øÅжÏС³µÊÇ·ñÔÈËÙÔ˶¯£®¹ÊA´íÎó£®
B¡¢Ã¿´Î¸Ä±äС³µµÄÖÊÁ¿Ê±£¬Ð¡³µµÄÖØÁ¦ÑØбÃæ·ÖÁ¦ºÍĦ²ÁÁ¦ÈÔÄܵÖÏû£¬²»ÐèÒªÖØÐÂƽºâĦ²ÁÁ¦£®¹ÊBÕýÈ·£®
C¡¢ÊµÑéʱ£¬Ó¦ÏÈ·Å¿ªÐ¡³µ£¬ÔÙ½Óͨ´òµã¼ÆʱÆ÷µçÔ´£¬ÓÉÓÚС³µÔ˶¯½Ï¿ì£¬¿ÉÄÜ»áʹ´ò³öÀ´µÄµãºÜÉÙ£¬²»ÀûÓÚÊý¾ÝµÄ²É¼¯ºÍ´¦Àí£®¹ÊC´íÎó£®
D¡¢Ð¡³µÔ˶¯µÄ¼ÓËÙ¶ÈÊÇÀûÓôòµã¼ÆʱÆ÷²âÁ¿£¬Èç¹ûÓÃÌìƽ²â³ömÒÔ¼°Ð¡³µÖÊÁ¿M£¬Ö±½ÓÓù«Ê½a=mg/MÇó³ö£¬ÕâÊÇÔÚÖ±½ÓÔËÓÃÅ£¶ÙµÚ¶þ¶¨ÂɼÆËãµÄ£¬¶øÎÒÃÇʵÑéÊÇÔÚ̽¾¿¼ÓËÙ¶ÈÓëÎïÌåËùÊܺÏÍâÁ¦ºÍÖÊÁ¿¼äµÄ¹Øϵ£®¹ÊD´íÎó£®
¹ÊÑ¡B£®
¹Ê´ð°¸Îª£º£¨1£©C £¨2£©B
·ÖÎö£º½â¾öʵÑéÎÊÌâÊ×ÏÈÒªÕÆÎÕ¸ÃʵÑéÔ­Àí£¬Á˽âʵÑéµÄ²Ù×÷²½ÖèºÍÊý¾Ý´¦ÀíÒÔ¼°×¢ÒâÊÂÏÆäÖÐƽºâĦ²ÁÁ¦µÄÔ­ÒòÒÔ¼°×ö·¨ÔÚʵÑéÖÐÓ¦µ±Çå³þ£®
µãÆÀ£º½Ì¿ÆÊé±¾ÉϵÄʵÑ飬ÎÒÃÇÒª´ÓʵÑéÔ­Àí¡¢ÊµÑéÒÇÆ÷¡¢ÊµÑé²½Ö衢ʵÑéÊý¾Ý´¦Àí¡¢ÊµÑé×¢ÒâÊÂÏîÕ⼸µãÈ¥¸ãÇå³þ£®
¶ÔÓÚʵÑéÎÒÃÇÒªÇå³þÿһÏî²Ù×÷´æÔÚµÄÀíÓÉ£®±ÈÈçΪʲôҪƽºâĦ²ÁÁ¦£¬ÎªÊ²Ã´ÒªÏȽÓͨµçÔ´ºóÊÍ·ÅÖ½´øµÈ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©Ä³Ñ§Éú×ö¡°Ñé֤ţ¶ÙµÚ¶þ¶¨ÂÉ¡±µÄʵÑéÔÚƽºâĦ²ÁÁ¦Ê±£¬°Ñ³¤Ä¾°åµÄÒ»¶ËµæµÃ¹ý¸ß£¬Ê¹µÃÇã½ÇÆ«´ó£®ËûËùµÃµ½µÄa-F¹Øϵ¿ÉÓÃÏÂÁÐÄĸùͼÏß±íʾ£¿Í¼ÖÐaÊÇС³µµÄ¼ÓËٶȣ¬FÊÇϸÏß×÷ÓÃÓÚС³µµÄÀ­Á¦£®
C
C


£¨2£©ÔÚ¡°Ì½¾¿¼ÓËÙ¶ÈÓëÎïÌåÖÊÁ¿¡¢ÎïÌåÊÜÁ¦µÄ¹Øϵ¡±µÄʵÑéÖУ¬ÒÔÏÂ×ö·¨ÕýÈ·µÄÊÇ
B
B

A£®Æ½ºâĦ²ÁÁ¦Ê±£¬Ó¦½«Ð¡ÅÌÓÃϸÉþͨ¹ý¶¨»¬ÂÖϵÔÚС³µÉÏ
B£®Ã¿´Î¸Ä±äС³µµÄÖÊÁ¿Ê±£¬²»ÐèÒªÖØÐÂƽºâĦ²ÁÁ¦
C£®ÊµÑéʱ£¬ÏÈ·Å¿ªÐ¡³µ£¬ÔÙ½Óͨ´òµã¼ÆʱÆ÷µÄµçÔ´
D£®ÇóС³µÔ˶¯µÄ¼ÓËÙ¶Èʱ£¬¿ÉÓÃÌìƽ²â³öСÅ̺ÍíÀÂëµÄÖÊÁ¿£¨M¡äºÍm¡ä£©ÒÔ¼°Ð¡³µÖÊÁ¿M£¬Ö±½ÓÓù«Ê½a=
M¡ä+m¡äM
gÇó³ö£®

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨1£©Ä³Ñ§Éú×ö¡°Ñé֤ţ¶ÙµÚ¶þ¶¨ÂÉ¡±µÄʵÑ飮ÔÚƽºâĦ²ÁÁ¦Ê±£¬°Ñ³¤Ä¾°åµÄÒ»¶ËµæµÃ¹ý¸ß£¬Ê¹µÃÇã½ÇÆ«´ó£®ËûËùµÃµ½µÄa-F¹Øϵ¿ÉÓÃÏÂÁÐÄĸùͼÏß±íʾ£¿Í¼ÖÐaÊÇС³µµÄ¼ÓËٶȣ¬FÊÇϸÏß×÷ÓÃÓÚС³µµÄÀ­Á¦£®ÕýÈ·Ñ¡ÏîÊÇ
C
C
£®
A¡¢B¡¢
C¡¢D¡¢
£¨2£©Ä³Í¬Ñ§ÓÃÖ½´øÑо¿×÷ÔȱäËÙÖ±ÏßÔ˶¯µÄС³µµÄ¼ÓËÙ¶Èʱ£¬´Ó´ò³öµÄÖ½´øÖÐÑ¡³öÒ»Ìõ½ÏºÃµÄÖ½´ø£¬Ã¿¸ô4¸öµã×÷Ϊһ¸ö¼ÆÊýµã£¬²¢±ê¼ÇΪ0¡¢1¡¢2¡¢3¡¢4¡¢¡­£®¸Ãͬѧ²âÁ¿³ö1Óë2Á½µã¼äµÄ¾àÀëΪS12£¬3Óë4Á½µã¼äµÄ¾àÀëΪS34£¬ÊµÑéÖÐʹÓõĵçԴƵÂÊΪf£¬ÓÉ´Ë¿ÉËã³öС³µÔ˶¯µÄ¼ÓËÙ¶Èa=
s34-s12
50
f2
s34-s12
50
f2
£®£¨´ð°¸ÓÃÌâÖиø³öµÄÎïÀíÁ¿±íʾ£©

£¨3£©ÔÚÑо¿ÎïÌåƽÅ×Ô˶¯µÄʵÑéÖУ¬ÓÃÒ»ÕÅÓ¡ÓÐС·½¸ñµÄÖ½¼Ç¼¹ì¼££¬Ð¡·½¸ñµÄ±ß³¤L=1.25cm£®ÈôСÇòÔÚƽÅ×Ô˶¯Í¾Öеļ¸¸öλÖÃÈçͼÖеÄa¡¢b¡¢c¡¢dËùʾ£¬ÔòСÇòƽÅ׵ijõËٶȵļÆËãʽΪv0=
2
gL
2
gL
£¨ÓÃL¡¢g±íʾ£©£¬ÆäÖµÊÇ
0.70m/s
0.70m/s
£®£¨g=9.8m/s2£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º½â´ðÌâ

£¨1£©Ä³Ñ§Éú×ö¡°Ñé֤ţ¶ÙµÚ¶þ¶¨ÂÉ¡±µÄʵÑ飮ÔÚƽºâĦ²ÁÁ¦Ê±£¬°Ñ³¤Ä¾°åµÄÒ»¶ËµæµÃ¹ý¸ß£¬Ê¹µÃÇã½ÇÆ«´ó£®ËûËùµÃµ½µÄa-F¹Øϵ¿ÉÓÃÏÂÁÐÄĸùͼÏß±íʾ£¿Í¼ÖÐaÊÇС³µµÄ¼ÓËٶȣ¬FÊÇϸÏß×÷ÓÃÓÚС³µµÄÀ­Á¦£®ÕýÈ·Ñ¡ÏîÊÇ______£®
A¡¢B¡¢
C¡¢D¡¢
£¨2£©Ä³Í¬Ñ§ÓÃÖ½´øÑо¿×÷ÔȱäËÙÖ±ÏßÔ˶¯µÄС³µµÄ¼ÓËÙ¶Èʱ£¬´Ó´ò³öµÄÖ½´øÖÐÑ¡³öÒ»Ìõ½ÏºÃµÄÖ½´ø£¬Ã¿¸ô4¸öµã×÷Ϊһ¸ö¼ÆÊýµã£¬²¢±ê¼ÇΪ0¡¢1¡¢2¡¢3¡¢4¡¢¡­£®¸Ãͬѧ²âÁ¿³ö1Óë2Á½µã¼äµÄ¾àÀëΪS12£¬3Óë4Á½µã¼äµÄ¾àÀëΪS34£¬ÊµÑéÖÐʹÓõĵçԴƵÂÊΪf£¬ÓÉ´Ë¿ÉËã³öС³µÔ˶¯µÄ¼ÓËÙ¶Èa=______£®£¨´ð°¸ÓÃÌâÖиø³öµÄÎïÀíÁ¿±íʾ£©

£¨3£©ÔÚÑо¿ÎïÌåƽÅ×Ô˶¯µÄʵÑéÖУ¬ÓÃÒ»ÕÅÓ¡ÓÐС·½¸ñµÄÖ½¼Ç¼¹ì¼££¬Ð¡·½¸ñµÄ±ß³¤L=1.25cm£®ÈôСÇòÔÚƽÅ×Ô˶¯Í¾Öеļ¸¸öλÖÃÈçͼÖеÄa¡¢b¡¢c¡¢dËùʾ£¬ÔòСÇòƽÅ׵ijõËٶȵļÆËãʽΪv0=______£¨ÓÃL¡¢g±íʾ£©£¬ÆäÖµÊÇ______£®£¨g=9.8m/s2£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010-2011ѧÄêºÓÄÏÊ¡ÖÜ¿ÚÊÐÏî³ÇÀϳÇÖÐѧ¸ßÈý£¨ÉÏ£©×ۺϼì²âÎïÀíÊÔ¾í£¨°Ë£©£¨½âÎö°æ£© ÌâÐÍ£º½â´ðÌâ

£¨1£©Ä³Ñ§Éú×ö¡°Ñé֤ţ¶ÙµÚ¶þ¶¨ÂÉ¡±µÄʵÑéÔÚƽºâĦ²ÁÁ¦Ê±£¬°Ñ³¤Ä¾°åµÄÒ»¶ËµæµÃ¹ý¸ß£¬Ê¹µÃÇã½ÇÆ«´ó£®ËûËùµÃµ½µÄa-F¹Øϵ¿ÉÓÃÏÂÁÐÄĸùͼÏß±íʾ£¿Í¼ÖÐaÊÇС³µµÄ¼ÓËٶȣ¬FÊÇϸÏß×÷ÓÃÓÚС³µµÄÀ­Á¦£®______

£¨2£©ÔÚ¡°Ì½¾¿¼ÓËÙ¶ÈÓëÎïÌåÖÊÁ¿¡¢ÎïÌåÊÜÁ¦µÄ¹Øϵ¡±µÄʵÑéÖУ¬ÒÔÏÂ×ö·¨ÕýÈ·µÄÊÇ______
A£®Æ½ºâĦ²ÁÁ¦Ê±£¬Ó¦½«Ð¡ÅÌÓÃϸÉþͨ¹ý¶¨»¬ÂÖϵÔÚС³µÉÏ
B£®Ã¿´Î¸Ä±äС³µµÄÖÊÁ¿Ê±£¬²»ÐèÒªÖØÐÂƽºâĦ²ÁÁ¦
C£®ÊµÑéʱ£¬ÏÈ·Å¿ªÐ¡³µ£¬ÔÙ½Óͨ´òµã¼ÆʱÆ÷µÄµçÔ´
D£®ÇóС³µÔ˶¯µÄ¼ÓËÙ¶Èʱ£¬¿ÉÓÃÌìƽ²â³öСÅ̺ÍíÀÂëµÄÖÊÁ¿£¨M¡äºÍm¡ä£©ÒÔ¼°Ð¡³µÖÊÁ¿M£¬Ö±½ÓÓù«Ê½a=gÇó³ö£®

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸