ÌâÄ¿ÄÚÈÝ
10£®riben¸£µººËµçվй©Ê¹ÊÖÐÊͷųö´óÁ¿µÄµâ131£¬µâ131ÊÇ·ÅÉäÐÔͬλËØ£¬Ë¥±äʱ»á·¢³ö¦ÂÉäÏßÓë¦ÃÉäÏߣ¬µâ131±»ÈËÉãÈëºó£¬»áΣº¦ÉíÌ彡¿µ£¬ÓÉ´ËÒýÆðÁËÈ«ÊÀ½çµÄ¹Ø×¢£®ÏÂÃæ¹ØÓں˷øÉäµÄÏà¹Ø֪ʶ£¬Ëµ·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©A£® | ÈËÀà¿ÉÒÔͨ¹ý¸Ä±äÍⲿ»·¾³À´¸Ä±äµâ131Ë¥±äµÄ¿ìÂý | |
B£® | µâ131µÄ°ëË¥ÆÚΪ8.3Ì죬Ôò4¸öµâÔ×Ӻ˾16.6Ììºó¾ÍÒ»¶¨Ê£ÏÂÒ»¸öÔ×ÓºË | |
C£® | µâ131·¢Éú¦ÂË¥±äʱËùÊͷŵĵç×ÓÊÇÔ×ÓºËÄÚµÄÖÐ×Óת»¯ÎªÖÊ×Óʱ²úÉúµÄ | |
D£® | ¦ÂÉäÏßÓë¦ÃÉäÏ߶¼Êǵç´Å²¨£¬µ«¦ÃÉäÏß´©Í¸±¾Áì±È¦ÂÉäÏßÇ¿ |
·ÖÎö °ëË¥ÆÚ¾ßÓÐͳ¼Æ¹æÂÉ£¬¶Ô´óÁ¿µÄÔ×ÓºËÊÊÓ㬰ëË¥ÆڵĴóСÓÉÔ×ÓºËÄÚ²¿ÒòËؾö¶¨£¬ÓëÍⲿ»·¾³Î޹أ®¦ÂÉäÏßÊǵç×ÓÁ÷£¬¦ÃÉäÏßÊǵç´Å²¨£¬Ë¥±äʱËùÊͷŵĵç×ÓÊÇÔ×ÓºËÄÚµÄÖÐ×Óת»¯ÎªÖÊ×Óʱ²úÉúµÄ£®
½â´ð ½â£ºA¡¢Ë¥±äµÄ¿ìÂýÓëÍⲿ»·¾³Î޹أ¬ÓÉÔ×ÓºËÄÚ²¿ÒòËؾö¶¨£®¹ÊA´íÎó£®
B¡¢°ëË¥ÆÚÊÊÓÃÓÚ´óÁ¿µÄÔ×Ӻˣ¬¶ÔÓÚÉÙÁ¿µÄÔ×Ӻ˲»ÊÊÓ㮹ÊB´íÎó£®
C¡¢¦ÂË¥±äʱ£¬µç×ÓÀ´×ÔÔ×Ӻˣ¬ÊÇÔ×ÓºËÖеÄÒ»¸öÖÐ×Óת±äΪһ¸öÖÊ×ÓºÍÒ»¸öµç×Ó£¬µç×ÓÊͷųöÀ´£¬µç×Ó²»ÊÇÀ´×ÔºËÍâµç×Ó£®¹ÊCÕýÈ·£®
D¡¢¦ÂÉäÏßÊǵç×ÓÁ÷£¬²»Êǵç´Å²¨£¬¦ÃÉäÏßÊǵç´Å²¨£¬´©Í¸±¾Áì½ÏÇ¿£®¹ÊD´íÎó£®
¹ÊÑ¡£ºC£®
µãÆÀ ½â¾ö±¾ÌâµÄ¹Ø¼üÖªµÀ°ëË¥ÆÚ¾ßÓÐͳ¼Æ¹æÂÉ£¬ÖªµÀÓ°Ïì°ëË¥ÆÚµÄÌõ¼þ£¬ÒÔ¼°ÖªµÀË¥±äµÄʵÖÊ£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
20£®ÔÚ¡¶Óôòµã¼ÆʱÆ÷²âËٶȡ·ÊµÑéÖУ¬ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | µç´Å´òµã¼ÆʱÆ÷Ó¦ÓÃ220v½»Á÷µçÔ´ | |
B£® | ÏȱպϵçÔ´¿ª¹Ø£¬Èôòµã¼ÆʱÆ÷Õý³£¹¤×÷ʱ£¬ÔÙÍ϶¯Ö½´ø | |
C£® | Ö½´øÉϵĴòµãÃܼ¯£¬ËµÃ÷Ö½´øÔ˶¯ËٶȽϴó | |
D£® | ±ØÐëÒÔÖ½´øÉϵÚÒ»¸ö×÷Ϊ¼ÆÊýµã£¬²¢²âÁ¿´¦ÀíÊý¾Ý |
1£®Ð¡ÇòÒÔv0=6m/sµÄ³õËٶȻ¬ÉÏÒ»¹â»¬Ð±Ã棬СÇòÔÚбÃæÉÏÔ˶¯µÄ¼ÓËٶȴóСʼÖÕΪ2m/s2£¬Ð±Ãæ×ã¹»³¤£¬Ôò¹ØÓÚСÇò»¬ÉÏбÃæºóµÄÔ˶¯ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | СÇòÔÚбÃæÉÏÒ»Ö±×öÔȼõËÙÔ˶¯ | |
B£® | ¾¹ý5sСÇòµÄ·³ÌΪ13m | |
C£® | µÚ2¸ö2sÄÚµÄƽ¾ùËÙ¶ÈΪ0 | |
D£® | СÇò»¬ÉÏбÃæºóλÒÆΪ5m£¬ÐèÒªµÄʱ¼äΪ1s»ò5s |
18£®ÈçͼËùʾ£¬²»´øµçµÄÕíÐε¼ÌåµÄA¡¢BÁ½¶Ë¸÷ÌùÓÐÒ»¶Ô½ð²£®µ±ÕíÐε¼ÌåµÄA¶Ë¿¿½üÒ»´øµçµ¼ÌåCʱ£¬ÒÔÏÂ˵·¨´íÎóµÄÊÇ£¨¡¡¡¡£©
A£® | A¶Ë½ð²ÕÅ¿ª£¬B¶Ë½ð²±ÕºÏ | |
B£® | ÓÃÊÖ´¥ÕíÐε¼ÌåB¶Ëʱ£¬A¶Ë½ð²ÈÔÕÅ¿ª£¬B¶Ë½ð²±ÕºÏ | |
C£® | ÓÃÊÖ´¥ÕíÐε¼Ìåºó£¬ÏȺó½«ÊÖºÍC¶¼ÒÆ×ߣ¬Á½¶Ô½ð²¾ùÕÅ¿ª | |
D£® | Ñ¡ÏîCÖÐÁ½¶Ô½ð²´øͬÖÖµçºÉ |
15£®ÔÚ×ö¡°Ñо¿ÔȱäËÙÖ±ÏßÔ˶¯¡±µÄʵÑéÖУ®Èçͼ1Ëùʾ£¬Ä³Í¬Ñ§ÓÉ´òµã¼ÆʱÆ÷µÃµ½±íʾС³µÔ˶¯¹ý³ÌµÄÒ»ÌõÇåÎúÖ½´ø£¬Ö½´øÉÏÁ½ÏàÁÚ¼ÆÊýµãµÄʱ¼ä¼ä¸ôΪ
T=0.10s£¬ÆäÖÐx1=7.05cm£¬x2=7.68cm£¬x3=8.33cm£¬x4=8.95cm£¬x5=9.61cm£¬x6=10.26cm£®
£¨1£©Í¨¹ý·ÖÎöÖ½´øÊý¾Ý£¬¿ÉÅжÏÎï¿éµÄÔ˶¯Çé¿öÊÇÔȼÓËÙ
£¨2£©Ï±íÁгöÁË´òµã¼ÆʱÆ÷´òÏÂB¡¢C¡¢E¡¢FʱС³µµÄ˲ʱËٶȣ¬ÇëÔÚ±íÖÐÌîÈë´òµã¼ÆʱÆ÷´òÏÂDµãʱС³µµÄ˲ʱËٶȣ®
ÇëÒÔAµãΪ¼ÆʱÆðµã£¬ÔÚͼ2Öл³öС³µµÄËÙ¶È-ʱ¼ä¹ØϵͼÏߣ®
£¨3£©¸ù¾ÝÄ㻳öµÄС³µµÄËÙ¶È-ʱ¼ä¹ØϵͼÏß¼ÆËã³öС³µ¼ÓËÙ¶Èa=0.64 m/s2£»AµãµÄ˲ʱËÙ¶È0.67m/s£®£¨ÒÔÉϽá¹û¾ù±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®
T=0.10s£¬ÆäÖÐx1=7.05cm£¬x2=7.68cm£¬x3=8.33cm£¬x4=8.95cm£¬x5=9.61cm£¬x6=10.26cm£®
£¨1£©Í¨¹ý·ÖÎöÖ½´øÊý¾Ý£¬¿ÉÅжÏÎï¿éµÄÔ˶¯Çé¿öÊÇÔȼÓËÙ
£¨2£©Ï±íÁгöÁË´òµã¼ÆʱÆ÷´òÏÂB¡¢C¡¢E¡¢FʱС³µµÄ˲ʱËٶȣ¬ÇëÔÚ±íÖÐÌîÈë´òµã¼ÆʱÆ÷´òÏÂDµãʱС³µµÄ˲ʱËٶȣ®
λÖà | B | C | D | E | F |
ËÙ¶È £¨m/s-1£© | 0.737 | 0.801 | 0.928 | 0.994 |
£¨3£©¸ù¾ÝÄ㻳öµÄС³µµÄËÙ¶È-ʱ¼ä¹ØϵͼÏß¼ÆËã³öС³µ¼ÓËÙ¶Èa=0.64 m/s2£»AµãµÄ˲ʱËÙ¶È0.67m/s£®£¨ÒÔÉϽá¹û¾ù±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®
3£®ÈçͼËùʾ£¬Õý·½ÐÎÐéÏß¿òÄÚ´æÔÚ×ÅÑØÖ½Ãæ·½ÏòµÄÔÈÇ¿µç³¡£¨Í¼ÖÐδ»³ö£©£¬Ò»µç×ÓÖ»Ôڵ糡Á¦×÷ÓÃÏ£¬´ÓMµãÒÔËÙ¶Èv0´¹Ö±ÓÚbc±ßÉäÈëµç³¡£¬´ÓQµãÒÔËÙ¶È2v0´¹Ö±cd±ß·É³öµç³¡£¬ÇÒbM=dQ£¬ÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©
A£® | µç×Ó´ÓMµãÔ˶¯µ½QµãµÄ¹ý³ÌÖе糡Á¦ÏÈ×ö¸º¹¦ºó×öÕý¹¦ | |
B£® | µç×Ó´ÓMµãµ½Qµã×öÔȱäËÙÔ˶¯ | |
C£® | µç³¡µÄ·½ÏòÊÇ´ÓcÖ¸Ïòd | |
D£® | MµãµÄµçÊÆÓëaµãµÄµçÊÆ¿ÉÄÜÏàµÈ |