£¨18·Ö£©Èçͼ¼×Ëùʾ£¬Îï¿éA¡¢BµÄÖÊÁ¿·Ö±ðÊÇ mA= 4.0kg ºÍ mB= 3.0kg£¬ÓÃÇᵯ»É˨½ÓÏàÁ¬·ÅÔڹ⻬µÄˮƽµØÃæÉÏ£¬Îï¿éBÓÒ²àÓëÊúֱǽÏà½Ó´¥£®ÁíÓÐÒ»Îï¿éC´Ót =0ʱÒÔÒ»¶¨ËÙ¶ÈÏòÓÒÔ˶¯£¬ÔÚt = 4 s ʱÓëÎï¿éAÏàÅö£¬²¢Á¢¼´ÓëAÕ³ÔÚÒ»Æð²»ÔÙ·Ö¿ª£®Îï¿éCµÄ v-t ͼÏóÈçͼÒÒËùʾ£®Çó£º
£¨1£©Îï¿éCµÄÖÊÁ¿mC£»
£¨2£©Ç½±Ú¶ÔÎï¿éBµÄµ¯Á¦ÔÚ 4 s µ½12s µÄʱ¼äÄÚ¶ÔB×öµÄ¹¦W¼°¶ÔBµÄ³åÁ¿IµÄ´óСºÍ·½Ïò£»
£¨3£©BÀ뿪ǽºóµÄ¹ý³ÌÖе¯»É¾ßÓеÄ×î´óµ¯ÐÔÊÆÄÜEP£®
£¨1£©=2©K
£¨2£©I = £36NS£¬·½ÏòÏò×ó
£¨3£©=9J
½âÎö:
£¨1£©ÓÉͼ֪£¬CÓëAÅöÇ°ËÙ¶ÈΪ=9m/s£¬ÅöºóËÙ¶ÈΪ=3m/s£¬CÓëAÅöײ¹ý³Ì¶¯Á¿Êغ㣮
¡¡¡3·Ö
µÃ=2©K¡¡¡2·Ö
£¨2£©Ç½¶ÔÎïÌåB²»×ö¹¦£¬¡¡2·Ö
ÓÉͼ֪£¬12sÄ©AºÍCµÄËÙ¶ÈΪ = £3m/s£¬4sµ½12s£¬Ç½¶ÔBµÄ³åÁ¿Îª
¡¡¡2·Ö
µÃI =£36NS¡¡2·Ö
·½ÏòÏò×ó¡¡1·Ö
£¨3£©12sÄ©BÀ뿪ǽ±Ú£¬Ö®ºóA¡¢B¡¢C¼°µ¯»É×é³ÉµÄϵͳ¶¯Á¿ºÍ»úеÄÜÊغ㣬ÇÒµ±ACÓëBËÙ¶Èv4ÏàµÈʱµ¯»Éµ¯ÐÔÊÆÄÜ×î´ó£®
¡¡¡¡2·Ö
¡¡2·Ö
µÃ=9J¡¡2·Ö
Ä꼶 | ¸ßÖÐ¿Î³Ì | Ä꼶 | ³õÖÐ¿Î³Ì |
¸ßÒ» | ¸ßÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ | ³õÒ» | ³õÒ»Ãâ·Ñ¿Î³ÌÍƼö£¡ |
¸ß¶þ | ¸ß¶þÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õ¶þ | ³õ¶þÃâ·Ñ¿Î³ÌÍƼö£¡ |
¸ßÈý | ¸ßÈýÃâ·Ñ¿Î³ÌÍƼö£¡ | ³õÈý | ³õÈýÃâ·Ñ¿Î³ÌÍƼö£¡ |
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
Èçͼ¼×Ëùʾ£¬Îï¿éA¡¢BµÄÖÊÁ¿·Ö±ðÊÇmA=4.0kgºÍmB=3.0kg. ÓÃÇᵯ»É˨½Ó£¬·ÅÔڹ⻬µÄˮƽµØÃæÉÏ£¬Îï¿éBÓÒ²àÓëÊúֱǽÏà½Ó´¥. ÁíÓÐÒ»Îï¿éC´Ót=0ʱÒÔÒ»¶¨ËÙ¶ÈÏòÓÒÔ˶¯£¬ÔÚt=4sʱÓëÎï¿éAÏàÅö£¬²¢Á¢¼´ÓëAÕ³ÔÚÒ»Æð²»ÔÙ·Ö¿ª£¬Îï¿éCµÄv-tͼÏóÈçͼÒÒËùʾ.Çó£º
£¨1£©Îï¿éCµÄÖÊÁ¿mC£»
£¨2£©Ç½±Ú¶ÔÎï¿éBµÄµ¯Á¦ÔÚ4 sµ½12sµÄʱ¼äÄÚ¶ÔB×öµÄ¹¦W¼°¶ÔBµÄ³åÁ¿IµÄ´óСºÍ·½Ïò£»
£¨3£©BÀ뿪ǽºóµÄ¹ý³ÌÖе¯»É¾ßÓеÄ×î´óµ¯ÐÔÊÆÄÜEp¡£
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
Èçͼ¼×Ëùʾ£¬Îï¿éA¡¢BµÄÖÊÁ¿·Ö±ðÊÇ mA= 4.0kg ºÍ mB= 3.0kg£¬ÓÃÇᵯ»ÉÏàÁ¬·ÅÔڹ⻬µÄˮƽµØÃæÉÏ£¬Îï¿éBÓÒ²àÓëÊúֱǽ±ÚÏà½Ó´¥£®ÁíÓÐÒ»Îï¿éC´Ót =0ʱÒÔÒ»¶¨ËÙ¶ÈÏòÓÒÔ˶¯£¬ÔÚt = 4 s ʱÓëÎï¿éAÏàÅö£¬²¢Á¢¼´ÓëAÕ³ÔÚÒ»Æð²»ÔÙ·Ö¿ª£®Îï¿éCµÄ v-t ͼÏñÈçͼÒÒËùʾ£®Çó£º
£¨1£©Îï¿éCµÄÖÊÁ¿mC£»
£¨2£©Ç½±Ú¶ÔÎï¿éBµÄµ¯Á¦ÔÚ 4 s µ½12 s µÄʱ¼äÄÚ¶ÔB×öµÄ¹¦W¼°¶ÔBµÄ³åÁ¿I µÄ´óСºÍ·½Ïò£»
£¨3£©BÀ뿪ǽºóµÄ¹ý³ÌÖе¯»É¾ßÓеÄ×î´óµ¯ÐÔÊÆÄÜEP£®
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º
£¨18·Ö£©Èçͼ¼×Ëùʾ£¬Îï¿éA¡¢BµÄÖÊÁ¿·Ö±ðÊÇmA=4.0kgºÍmB=3.0kg. ÓÃÇᵯ»É˨½Ó£¬·ÅÔڹ⻬µÄˮƽµØÃæÉÏ£¬Îï¿éBÓÒ²àÓëÊúֱǽÏà½Ó´¥. ÁíÓÐÒ»Îï¿éC´Ót=0ʱÒÔÒ»¶¨ËÙ¶ÈÏòÓÒÔ˶¯£¬ÔÚt=4sʱÓëÎï¿éAÏàÅö£¬²¢Á¢¼´ÓëAÕ³ÔÚÒ»Æð²»ÔÙ·Ö¿ª£¬Îï¿éCµÄv-tͼÏóÈçͼÒÒËùʾ.Çó£º
£¨1£©Îï¿éCµÄÖÊÁ¿mC£»
£¨2£©Ç½±Ú¶ÔÎï¿éBµÄµ¯Á¦ÔÚ4 sµ½12sµÄʱ¼äÄÚ¶ÔB×öµÄ¹¦W¼°¶ÔBµÄ³åÁ¿IµÄ´óСºÍ·½Ïò£»
£¨3£©BÀ뿪ǽºóµÄ¹ý³ÌÖе¯»É¾ßÓеÄ×î´óµ¯ÐÔÊÆÄÜEp¡£
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2014½ì½ËÕÊ¡ËÕÖÝÊиßÈýµÚһѧÆÚÆÚÖп¼ÊÔÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ
Èçͼ¼×Ëùʾ£¬Îï¿éAºÍ×ã¹»³¤µÄľ°åBµþ·ÅÔڹ⻬ˮƽÃæÉÏ£¬ÓÃˮƽÁ¦F×÷ÓÃÔÚÎï¿éAÉÏ£¬A¡¢BÒ»Æð´Ó¾²Ö¹¿ªÊ¼×öÖ±ÏßÔ˶¯£¬FËæʱ¼ät²»¶ÏÔö¼Ó£¬±ä»¯¹ØϵÈçͼÒÒËùʾ£¬ÉèÎï¿éAËùÊÜĦ²ÁÁ¦ÎªfA£¬¼ÓËÙ¶ÈΪaA£¬Ä¾°åBµÄËÙ¶ÈΪvB£¬¼ÓËÙ¶ÈΪaB£¬ÏÂÁÐÄÜÕýÈ·±íʾfA¡¢aA¡¢vB¡¢aB¾½Ï³¤Ê±¼äµÄ¹ØϵͼÏóµÄÊÇ( )
²é¿´´ð°¸ºÍ½âÎö>>
¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º±±¾©ÊÐʯ¾°É½Çø2010Äê¸ßÈýһģ£¨Àí¿Æ×ۺϣ©ÎïÀí²¿·Ö ÌâÐÍ£º¼ÆËãÌâ
£¨18·Ö£©Èçͼ¼×Ëùʾ£¬Îï¿éA¡¢BµÄÖÊÁ¿·Ö±ðÊÇ mA= 4.0kg ºÍ mB= 3.0kg£¬ÓÃÇᵯ»É˨½ÓÏàÁ¬·ÅÔڹ⻬µÄˮƽµØÃæÉÏ£¬Îï¿éBÓÒ²àÓëÊúֱǽÏà½Ó´¥£®ÁíÓÐÒ»Îï¿éC´Ót =0ʱÒÔÒ»¶¨ËÙ¶ÈÏòÓÒÔ˶¯£¬ÔÚ t = 4 s ʱÓëÎï¿éAÏàÅö£¬²¢Á¢¼´ÓëAÕ³ÔÚÒ»Æð²»ÔÙ·Ö¿ª£®Îï¿éCµÄ v-t ͼÏóÈçͼÒÒËùʾ£®Çó£º
£¨1£©Îï¿éCµÄÖÊÁ¿mC£»
£¨2£©Ç½±Ú¶ÔÎï¿éBµÄµ¯Á¦ÔÚ 4 s µ½12 s µÄʱ¼äÄÚ¶ÔB×öµÄ¹¦W¼°¶ÔBµÄ³åÁ¿I µÄ´óСºÍ·½Ïò£»
£¨3£©BÀ뿪ǽºóµÄ¹ý³ÌÖе¯»É¾ßÓеÄ×î´óµ¯ÐÔÊÆÄÜEP£®
²é¿´´ð°¸ºÍ½âÎö>>
°Ù¶ÈÖÂÐÅ - Á·Ï°²áÁбí - ÊÔÌâÁбí
ºþ±±Ê¡»¥ÁªÍøÎ¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨Æ½Ì¨ | ÍøÉÏÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | µçÐÅթƾٱ¨×¨Çø | ÉæÀúÊ·ÐéÎÞÖ÷ÒåÓк¦ÐÅÏ¢¾Ù±¨×¨Çø | ÉæÆóÇÖȨ¾Ù±¨×¨Çø
Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com