Question

11£®Ä³ÎïÀíÐËȤС×éÀûÓôøÓп̶ȳߵÄбÃ棬С³µºÍÊýÖµÖÓ²âÁ¿Ð¡³µÆ½¾ùËٶȡ±£¬ÈçͼËùʾ£¬Í¼ÖÐÏÔʾµÄÊÇËûÃDzâÁ¿¹ý³ÌÖеÄС³µÔڼס¢ÒÒ¡¢±ûÈý¸öλÖü°Æä¶ÔӦʱ¼äµÄÇéÐΣ¬ÏÔʾʱ¼äµÄ¸ñʽÊÇ¡°Ê±£º·Ö£ºÃ롱

£¨1£©ÇëÄã¸ù¾ÝͼʾÍê³Éϱí

	С³µÓɼ×ÖÁÒÒ	С³µÓÉÒÒÖÁ±û	С³µÓɼ×ÖÁ±û
·³ÌS/cm	26
ʱ¼ät/s		4
ƽ¾ùËÙ¶Èv/£¨cm/s£©			15

£¨2£©·ÖÎö±íÖеÄÊý¾Ý£¬Ð¡³µÓɼ×ÖÁÒÒµÄËÙ¶ÈСÓÚ£¨Ñ¡Ìî¡°´óÓÚ¡±¡¢¡°Ð¡ÓÚ¡±¡¢¡°µÈÓÚ¡±£©Ð¡³µÓɼ×ÖÁ±ûµÄËٶȣ¬Ð¡³µËù·ÅµÄбÃæÓ¦±£³Ö½ÏС£¨Ìî¡°´ó¡±»ò¡°Ð¡¡±£©µÄƶȣ¬ÕâÑùС³µÔÚбÃæÉÏÔ˶¯Ê±¼ä»á³¤£¨Ìî¡°³¤¡±»ò¡°¶Ì¡±£©Ð©£¬±ãÓÚ²âÁ¿£®
£¨3£©Ð´³ö»áʹµÃƽ¾ùËٶȲâÁ¿Îó²îÆ«´óµÄÁ½¸öÔ­ÒòÏÈÊÍ·ÅС³µºó¼Æʱ£»Ð¡³µ»¹Î´×²»÷½ðÊôƬ¾ÍÍ£Ö¹¼Æʱ£®

Answer 1

·ÖÎö £¨1£©ÓÉͼ¶Á³öС³µ´Ó¼×µ½ÒÒÓõÄʱ¼ä¡¢Ð¡³µ´ÓÒÒµ½±û×ߵľàÀ롢С³µ´Ó¼×µ½±ûÓõÄʱ¼äºÍ×ߵľàÀ룬ÀûÓÃËٶȹ«Ê½ÇóС³µÓɼ×ÖÁÒÒ¡¢Ð¡³µÓÉÒÒÖÁ±û¡¢Ð¡³µÓɼ×ÖÁ±ûµÄËٶȣ¬ÌîÈë±í¸ñ¼´¿É£®
£¨2£©Óɱí¸ñÊý¾Ý¿É֪С³µ¼×ÖÁÒÒÓë¼×ÖÁ±ûµÄËٶȹØϵ£»¶ÔͬһбÃ棬бÃæÇã½ÇԽС£¬Ð¡³µÔÚбÃæÉÏÔ˶¯µÄʱ¼äÔ½³¤£¬Ô½±ãÓÚʱ¼äµÄ²âÁ¿£®
£¨3£©´Ó²âÁ¿µÄС³µÍ¨¹ýµÄ·³ÌºÍʱ¼äÉÏ·ÖÎö£®

½â´ð ½â£º
£¨1£©ÓÉͼ֪£¬Ð¡³µ´Ó¼×µ½Òҵķ³Ì£ºs_¼×ÒÒ=90.0cm-64.0cm=26.0cm£¬
ËùÒÔv_¼×ÒÒ=$\frac{{s}_{¼×ÒÒ}}{{t}_{¼×ÒÒ}}$=$\frac{26.0cm}{2s}$=13cm/s£»
С³µ´ÓÒÒµ½±ûµÄ·³Ì£ºs_ÒÒ±û=64.0cm£¬
ËùÒÔv_ÒÒ±û=$\frac{{s}_{ÒÒ±û}}{{t}_{ÒÒ±û}}$=$\frac{64.0cm}{4s}$=16cm/s£»
С³µ´Ó¼×µ½±ûµÄ·³Ì£ºs_¼×±û=90.0cm£¬
t_¼×±û=5£º10-5£º04=6s£¬
ËùÒÔt_¼×±û=$\frac{{s}_{¼×±û}}{{t}_{¼×±û}}$=$\frac{90.0cm}{6s}$=15cm/s£®

	С³µÓɼ×ÖÁÒÒ	С³µÓÉÒÒÖÁ±û	С³µÓɼ×ÖÁ±û
·³Ìs/cm	26	64	90
ʱ¼ät/s	2	4	6
ƽ¾ùËÙ¶Èv/£¨cm/s£©	13	16	15

£¨2£©Óɱí¸ñÊý¾Ý¿ÉÖª£¬Ð¡³µÓɼ×ÖÁÒÒµÄËÙ¶ÈСÓÚС³µÓɼ×ÖÁ±ûµÄËٶȣ»
С³µËù·ÅµÄбÃæÓ¦±£³Ö½ÏСµÄƶȣ¬ÕâÑùС³µÔÚбÃæÉÏÔ˶¯µÄʱ¼ä»á³¤Ð©£¬¶ø±ãÓÚ²âÁ¿Ð¡³µµÄÔ˶¯Ê±¼ä£»
£¨3£©¸ù¾Ýv=$\frac{s}{t}$Öª£¬µ±ÏÈÊÍ·ÅС³µºó¼Æʱ»òС³µ»¹Î´×²»÷½ðÊôƬ¾ÍÍ£Ö¹¼ÆʱµÈʱ¼ä²âÁ¿Æ«Ð¡£¬´Ó¶øÔì³É²âÁ¿½á¹ûÆ«´ó£®
¹Ê´ð°¸Îª£º£¨1£©¼û±í¸ñ£» £¨2£©Ð¡ÓÚ£»Ð¡£»³¤£»£¨3£©ÏÈÊÍ·ÅС³µºó¼Æʱ£»Ð¡³µ»¹Î´×²»÷½ðÊôƬ¾ÍÍ£Ö¹¼ÆʱµÈ

µãÆÀ ±¾Ì⿼²éÁËʵÑé×¢ÒâÊÂÏî¡¢Çóƽ¾ùËٶȡ¢ÅжÏС³µµÄÔ˶¯ÐÔÖÊ£¬ÊìÁ·Ó¦ÓÃËٶȹ«Ê½ÊÇÕýÈ·½âÌâµÄ¹Ø¼ü£®