·³ÉÌ×¼¼Êõ×°±¸ÌرðÊǸßËÙ¶¯³µ×éÒѾ×ßÔÚÊÀ½çÏȽøÐÐÁУ®ÈôÒ»Á¾ÖÊÁ¿ÎªMµÄ¸ßÌú£¬ÒԶ¹¦ÂÊPÆô¶¯£¬¸ßÌúÔÚÌú¹ìÉÏÐÐʻʱÊܵ½µÄ×èÁ¦ºãΪ³µÖصÄk±¶£¬Ôò( ) A£®¸ßÌúÆð¶¯Ê±£¬×öÔȼÓËÙÖ±ÏßÔ˶¯ B£®ÔÚʱ¼ä ÄÚ¸ßÌúÇ£ÒýÁ¦×ö¹¦ÎªPt
C£®¸ßÌúÔÚ¹ìµÀÉÏÐÐʻʱÄÜ´ïµ½µÄ×î´óËÙ¶ÈΪ
P MgD£®µ±¸ßÌúÔËÐÐËÙ¶ÈΪv(СÓÚ×î´óËÙ¶È)ʱµÄ¼ÓËÙ¶ÈΪ
P?kg vM15£® (±¾Ìâ9·Ö)ÈçͼËùʾ£¬·¢ÉäÉý¿ÕµÄÎÀÐÇÔÚ×ªÒÆÍÖÔ²¹ìµÀ¢ñÉÏAµã´¦¾±ä¹ìºó½øÈëÔËÐÐÔ²¹ìµÀ¢ò£®A¡¢B·Ö±ðΪ¹ìµÀ¢ñµÄÔ¶µØµãºÍ½üµØµã£®ÔòÎÀÐÇÔÚ¹ìµÀ¢ñÉÏ£¨ £©
A£®¾¹ýAµãµÄËÙ¶ÈСÓÚ¾¹ýBµãµÄËÙ¶È
B£®¾¹ýAµãµÄ¶¯ÄÜ´óÓÚÔÚ¹ìµÀ¢òÉϾ¹ýAµãµÄ¶¯ÄÜ C£®Ô˶¯µÄÖÜÆÚ´óÓÚÔÚ¹ìµÀ¢òÉÏÔ˶¯µÄÖÜÆÚ
D£®¾¹ýAµãµÄ¼ÓËٶȵÈÓÚÔÚ¹ìµÀ¢òÉϾ¹ýAµãµÄ¼ÓËÙ¶È
16£® (±¾Ìâ9·Ö)ÎÒ¹úÒÑʵÏÖÁËÔØÈ˺½Ìì·ÉÐУ¬²¢×ÅÊÖʵʩµÇÔ¼ƻ®£¬ÔÚÔØÈ˿ռäÕ¾Î§ÈÆÔÂÇòÑØÔ²ÖܹìµÀÔËÐÐʱ
A£®ÓԱËùÊܺÏÍâÁ¦×ÜΪÁã B£®ÓԱËùÊÜÖØÁ¦×ÜΪÁã
C£®ÓԱ²»ÄÜÓõ¯»É²âÁ¦¼Æ²âÁ¿ÎïÌåµÄÖØÁ¦ D£®ÔØÈ˿ռäÕ¾ÀëÔÂÇòÔ½Ô¶£¬ÓԱËùÊܵ½ÖØÁ¦Ô½Ð¡ Èý¡¢ÊµÑéÌâ:¹²2СÌ⣬ÿÌâ8·Ö£¬¹²16·Ö
17£® (±¾Ìâ9·Ö)ÓÃ×ÔÓÉÂäÌåÔ˶¯ÑéÖ¤»úеÄÜÊØºã¶¨ÂɵÄʵÑé
£¨1£©ÈôʵÑéÖÐËùÓÃÖØÎïµÄÖÊÁ¿m =1kg£¬´òµãʱ¼ä¼ä¸ôΪ0.02s,´ò³öµÄÖ½´øÈçÏÂͼËùʾ£¬0¡¢A¡¢B¡¢C¡¢DΪÏàÁڵļ¸µã£¬²âµÄ OA = 0.18cm¡¢OB = 0.76cm¡¢OC = 1.71cm¡¢OD = 3.04cm,–˳öµ±µØµÄÖØÁ¦¼ÓËÙ¶Èg= 9.8m/s2£¬ÔòÖØÎïÔÚBµãʱµÄ¶¯ÄÜEKB=____J£®´Ó¿ªÊ¼ÏÂÂäµ½BµãµÄ¹ý³ÌÖУ¬ÖØÎïµÄÖØÁ¦ÊÆÄܼõÉÙÁ¿ÊÇ______J£¬Óɴ˵óöµÄ½áÂÛÊÇ__________£®(¼ÆËã½á¹û±£ÁôÁ½Î»ÓÐЧÊý×Ö£©
£¨2£©¸ù¾ÝÖ½´øËã³öÏà¹Ø¸÷µãµÄËÙ¶ÈvÁ¿³ö³öÏÂÂäµÄ¾àÀëÒÔv2/2Á¦×ÝÖᣬÒÔhΪºáÖỳöµÄͼÏßÓ¦ÊÇͼÖеÄ________£®¾ÍÖ¤Ã÷»úеÄÜÊÇÊØºãµÄ£¬Í¼ÏñµÄбÂÊ´ú±íµÄÎïÀíÁ¿ÊÇ_______£®
A£® B£® C£® D£®
18£®Ä³ÊµÑéС×éÀûÓÃÈçͼ1ËùʾµÄ×°Öã¬Ì½¾¿ÎïÌåµÄ¼ÓËÙ¶ÈÓëºÏÍâÁ¦¡¢ÖÊÁ¿¹ØÏµ£¬½«¹âµçÃÅA¡¢B¹Ì¶¨ÔÚÒ»¶Ë´ø¶¨»¬Âֵij¤Ä¾°åÉϵÄÊʵ±Î»Öã¬Ð¡³µÉϹ̶¨Óе²¹âƬ£¬µ²¹âƬ¿í¶Èd½ÏС£¬¿É½«µ²¹âƬ¾¹ý¹âµçÃŹý³ÌÖÐµÄÆ½¾ùËٶȽüËÆ¿´³ÉС³µ¾¹ýA¡¢BÁ½µãµÄ˲ʱËÙ¶È¡£
ʵÑé½øÐÐÁËÈçϵIJÙ×÷£º
(1)½«³¤Ä¾°åûÓж¨»¬ÂÖµÄÒ»¶ËÊʵ±µæ¸ß£¬ÒÔÆ½ºâС³µÏ»¬Ê±ËùÊܵÄĦ²ÁÁ¦¡£¾ßÌå²Ù×÷Ϊ£ºÐ¡³µ_____£¨Ìî¡°¹Ò×Å¡±»ò¡°²»¹Ò¡±£©¹³Â룬·´¸´µ÷Õûµæ¿éλÖ㨻ò¸ß¶È£©£¬½«Ð¡³µ´Ó³¤Ä¾°åÉÏÇáÍÆÒ»Ï£¬¹Û²ìС³µµÄÔ˶¯Çé¿ö£¬Ê¹Ð¡³µ¾¹ý¹âµçÃÅA¡¢¹âµçÃÅBʱµÄµ²¹âʱ¼ä_________£¨Ìî¡°ÏàµÈ¡±»ò¡°²»ÏàµÈ¡±£©¡£
(2)½«Ð¡³µºÍ¹³ÂëÓÃϸÉþË©½Ó£¬¿ç¹ý¶¨»¬ÂÖºó½«Ð¡³µ´Ó³¤Ä¾°åµÄÒ»¶¨¸ß¶È´¦Óɾ²Ö¹ÊÍ·Å¡£ÒÑÖª¹³ÂëµÄÖÊÁ¿Îªm£¬Ð¡³µÓëµ²¹âƬµÄ×ÜÖÊÁ¿ÎªM£¬µ²¹âƬµÄ¿í¶ÈΪd£¬Á½¹âµçÃÅÖ®¼äµÄ¾àÀëΪs£¬Ð¡³µ¾¹ý¹âµçÃÅA¡¢¹âµçÃÅBʱµÄʱ¼ä·ÖΪt1ºÍt2¡£ÏÂÁУº
¢ÙС³µ¾¹ý¹âµçÃÅA¡¢¹âµçÃÅBµÄ˲ʱËٶȵıí´ïʽ·Ö±ðΪvA=_________£¬vB=_________£¬¼ÓËٶȵıí´ïʽa=_________¡££¨ÓÃÌâÖÐÒÑÖªÎïÀíÁ¿±íʾ£©
¢Ú¸ÃС×éµÄͬѧÔÚ̽¾¿¼ÓËÙ¶ÈÓëÍâÁ¦µÄ¹ØÏµÊ±£¬±£³ÖС³µÓëµ²¹âƬµÄ×ÜÖÊÁ¿M²»±ä£¬Í¨¹ý¸Ä±ä¹³ÂëµÄÖÊÁ¿m£¬µÃµ½Á˶à×éʵÑéÊý¾Ý£¬»³öС³µµÄa-FͼÏñ£¨ÊµÑéÖÐÂú×ãm< ËÄ¡¢½â´ðÌ⣺±¾Ìâ¹²4Ì⣬ÿÌâ5·Ö£¬¹²20·Ö 19£®£¨6·Ö£© (±¾Ìâ9·Ö)±ùºøÊǶ¬°Â»á±ÈÈüÏîÄ¿£¬ÈçͼËùʾ£®±ÈÈüÖУ¬±ùºøÔÚˮƽ±ùÃæÉϵÄÔ˶¯¿ÉÊÓΪÔȼõËÙÖ±ÏßÔ˶¯£®ÉèÒ»ÖÊÁ¿m=19kgµÄ±ùºø±»Ô˶¯Ô±ÒÔ3m/sµÄËÙ¶ÈÍÆ³ö£¬ÒÑÖª±ùÃæÓë±ùºø¼äµÄ¶¯Ä¦²ÁÒòÊýΪ0.02£¬gÈ¡10m/s2£¬Çó£º £¨1£©±ùºøµÄÖØÁ¦£» £¨2£©±ùºøµÄ¼ÓËÙ¶È£» £¨3£©´ÓÍÆ³öµ½Í£Ï£¬±ùºøµÄÎ»ÒÆ£® 20£®£¨6·Ö£© (±¾Ìâ9·Ö)¸ßÌúÁгµÉÏÓкܶàÖÆ¶¯×°Öã®ÔÚÿ½Ú³µÏáÉÏ×°ÓÐÖÆ¶¯·çÒí£¬µ±·çÒíÍêÈ«´ò¿ªÊ±£¬¿ÉʹÁгµ²úÉú µÄƽ¾ùÖÆ¶¯¼ÓËÙ¶È£®Í¬Ê±£¬ÁгµÉÏ»¹Óеç´ÅÖÆ¶¯ÏµÍ³¡¢¿ÕÆøÖÆ¶¯ÏµÍ³¡¢Ä¦²ÁÖÆ µÄƽ¾ùÖÆ¶¯¼ÓËÙ¶È£®ËùÓÐÖÆ¶¯ÏµÍ³Í¬Ê±×÷ µÄËÙ ¶¯ÏµÍ³µÈ£®µ¥¶ÀÆô¶¯µç´ÅÖÆ¶¯ÏµÍ³£¬¿ÉʹÁгµ²úÉúÓ㬿ÉʹÁгµ²úÉú×î´óΪ µÄƽ¾ùÖÆ¶¯¼ÓËÙ¶È£®ÔÚÒ»¶ÎÖ±Ïß¹ìµÀÉÏ£¬ÁгµÕýÒÔ ¶ÈÔÈËÙÐÐʻʱ£¬Áгµ³¤½Óµ½Í¨Öª£¬Ç°·½ÓÐÒ»Áгµ³öÏÖ¹ÊÕÏ£¬ÐèÒª¸ÃÁгµ¼õËÙÍ£³µ£®Áгµ³¤ÏȽ«Öƶ¯·çÒíÍêÈ«´ò¿ªÈøßËÙÐÐÊ»µÄÁгµ¼õËÙ£¬µ±³µËÙ¼õСÁËʱ£¬ÔÙͨ¹ýµç´ÅÖÆ¶¯ÏµÍ³Í¬Ê±Öƶ¯£® £¨1£©Èô²»ÔÙ¿ªÆôÆäËûÖÆ¶¯ÏµÍ³£¬´Ó¿ªÊ¼Öƶ¯µ½Í£³µ£¬¸ßÌúÁгµÐÐÊ»µÄ¾àÀëÊǶàÉÙ£¿ £¨2£©ÈôÖÆ¶¯·çÒíÍêÈ«´ò¿ªÊ±£¬¾àÀëǰ³µÖ»ÓÐÖ㬲ÅÄܱ£Ö¤²»Óëǰ³µÏàײ£¿ 21£®£¨6·Ö£© (±¾Ìâ9·Ö)2016Äê10ÔÂ19ÈÕ£¬¡°ÉñÖÛʮһºÅ¡±ÔØÈË·É´¬Óë¡°Ì칬¶þºÅ¡±¿Õ¼äʵÑéÊҳɹ¦ÊµÏÖ×Ô¶¯½»»á¶Ô½Ó£¬ÐγÉÒ»¸ö×éºÏÌåÔÚ¡°Ì칬¶þºÅ¡±Ô¹ìµÀÈÆµØÇò×öÔ²ÖÜÔ˶¯¡£ÒÑÖªµØÇòµÄ°ë¾¶R£¬µØÇò±íÃæÖØÁ¦¼ÓËÙ¶Èg£¬¡°Ì칬¶þºÅ¡±¾àÀëµØÃæ¸ß¶Èh¡£Çó¶Ô½Óºó×éºÏÌåÔ˶¯µÄÏßËÙ¶È´óС¡£ 22£®£¨8·Ö£© (±¾Ìâ9·Ö)ÈçͼËùʾ£¬Ë®Æ½´«ËÍ´øAB³¤1m£¬ÒÔv=1m/sµÄËÙ¶ÈÔÈËÙÔ˶¯£®ÖÊÁ¿¾ùΪ4kgµÄСÎïÌåP¡¢QÓëÈÆ¹ý¶¨»¬ÂÖµÄÇáÉþÏàÁ¬£¬t=0ʱ¿ÌPÔÚ´«ËÍ´øA¶ËÒÔ³õËÙ¶Èv0=4m/sÏòÓÒÔ˶¯£¬ÒÑÖªPÓë´«ËÍ´ø¼ä¶¯Ä¦²ÁÒòÊýΪ0.5£¬PÔÚ´«ËÍ´øÉÏÔ˶¯¹ý³ÌËüÓ붨»¬ÂÖ¼äµÄÉþʼÖÕˮƽ£®²»¼Æ¶¨»¬ÂÖÖÊÁ¿ºÍĦ²Á£¬Éþ²»¿ÉÉ쳤ÇÒÓÐ×ã¹»³¤¶È£¬×î´ó¾²Ä¦²ÁÁ¦ÊÓΪµÈÓÚ»¬¶¯Ä¦²ÁÁ¦£¬È¡g=10m/s1£®Çó£º £¬ÄÇô¸ÃÁгµ×î³ÙÔÚ¾àÀëǰ³µ¶àÔ¶´¦´ò¿ªÊ£ÓàµÄÖÆ¶¯×° £¨1£©t=0ʱ¿ÌСÎïÌåPµÄ¼ÓËÙ¶È´óСºÍ·½Ïò£» £¨1£©Ð¡ÎïÌåP»¬Àë´«ËÍ´øÊ±µÄËÙ¶È£® ²Î¿¼´ð°¸ Ò»¡¢µ¥ÏîÑ¡ÔñÌ⣺±¾Ìâ¹²10СÌ⣬ÿСÌâ4·Ö£¬¹²40·Ö£®ÔÚÿСÌâ¸ø³öµÄËĸöÑ¡ÏîÖУ¬Ö»ÓÐÒ»ÏîÊÇ·ûºÏÌâĿҪÇóµÄ 1£®B ¡¾½âÎö¡¿ ¡¾Ïê½â¡¿ AB.СÇò´ÓBÖÁC¹ý³Ì£¬ÖØÁ¦´óÓÚµ¯»ÉµÄµ¯Á¦£¬ºÏÁ¦ÏòÏ£¬Ð¡Çò¼ÓËÙÔ˶¯£»Cµ½D¹ý³Ì£¬ÖØÁ¦Ð¡ÓÚµ¯Á¦£¬ºÏÁ¦ÏòÉÏ£¬Ð¡Çò¼õËÙÔ˶¯£¬¶øÔÚCµãСÇòËùÊܵ¯Á¦´óСµÈÓÚÖØÁ¦£¬¼ÓËÙ¶ÈΪÁ㣬ËùÒÔÔÚCµãËÙ¶È×î´ó£¬¼´¶¯ÄÜ×î´ó£¬¹ÊA´íÎó£¬BÕýÈ·£» CD.СÇòϽµ¹ý³ÌÖУ¬Ö»ÓÐÖØÁ¦ºÍµ¯»ÉµÄµ¯Á¦×ö¹¦£¬Ð¡ÇòºÍµ¯»É×é³ÉµÄϵͳ»úеÄÜÊØºã£¬¼´Ð¡ÇòµÄÖØÁ¦ÊÆÄÜ¡¢¶¯Äܺ͵¯»ÉµÄµ¯ÐÔÊÆÄÜ×ܺͱ£³Ö²»±ä£¬¶øÐ¡ÇòµÄ»úеÄÜ»á±ä»¯£¬ËùÒÔ´ÓA¡úCλÖÃСÇòÖØÁ¦ÊÆÄܵļõÉÙµÈÓÚ¶¯ÄÜÔö¼ÓÁ¿ºÍµ¯ÐÔÊÆÄÜÔö¼ÓÁ¿Ö®ºÍ£¬¹ÊСÇòÖØÁ¦ÊÆÄܵļõÉÙ´óÓÚСÇò¶¯ÄܵÄÔö¼Ó¡£¹ÊCD´íÎó¡£ 2£®C ¡¾½âÎö¡¿ ¡¾Ïê½â¡¿ AC.×ãÇò±»Ì߯ðºóÔÚÔ˶¯¹ý³ÌÖУ¬Ö»Êܵ½ÖØÁ¦×÷Óã¬Ö»ÓÐÖØÁ¦×ö¹¦£¬×ãÇòµÄ»úеÄÜÊØºã£¬×ãÇòµ½´ï×î¸ßµãʱ£¬»úеÄÜΪ£º 1E?mgh?mv2 2ÓÉÓÚ×ãÇòµÄ»úеÄÜÊØºã£¬Ôò×ãÇò¸Õ±»Ì߯ðʱµÄ»úеÄÜΪ£º 1E?mgh?mv2 2×ãÇò»ñµÃµÄ»úеÄܵÈÓÚÔ˶¯Ô±¶Ô×ãÇòËù×öµÄ¹¦£¬Òò´ËÔ˶¯Ô±¶Ô×ãÇò×ö¹¦£º 1E?mgh?mv2 2¹ÊA´íÎó£¬CÕýÈ·£» BD.×ãÇòÉÏÉý¹ý³ÌÖØÁ¦×ö¹¦£º WG??mgh ×ãÇòÉÏÉý¹ý³ÌÖп˷þÖØÁ¦×ö¹¦£º W¿Ë?mgh ¹ÊB¡¢D´íÎó£®