Á½Áмòгºá¶ÉÔÚͬһ½éÖÊÖÐÏàÏò´«²¥£¬t=0ʱ¿Ì£¬

  ÕâÁ½Áв¨µÄ²¨¶¯Í¼ÏñÈçͼËùʾ£®ÆäÖмòгºá¶Éa

  (ͼÖÐÐéÏßËùʾ)ÑØxÖáµÄÕý·½Ïò´«²¥£»¼òгºá²¨

  b(ͼÖÐʵÏßËùʾ)ÑØxÖáµÄ¸º·½Ïò´«²¥ÒÑ֪λ

ÓÚx=45 m´¦µÄÖʵãPµÚÒ»´Îµ½´ïƽºâλÖÃËùÐè

µÄʱ¼äΪ0£®5 s£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ

  A£®²¨µÄ´«²¥ËÙ¶ÈΪ30 m£¯s  B£®²¨µÄƵÂÊΪ0£®25 HZ

  C£®ÖʵãPµÄÕñ·ùΪ0£®4 cm  D£®´Ëʱ¿ÌÖʵãPÏòyÖáÕý·½ÏòÔ˶¯

 

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

Á½Áмòгºá¶ÉÔÚͬһ½éÖÊÖÐÏàÏò´«²¥£¬t=0ʱ¿Ì£¬ÕâÁ½Áв¨µÄ²¨¶¯Í¼ÏóÈçͼËùʾ£®ÆäÖмòгºá¶Éa£¨Í¼ÖÐÐéÏßËùʾ£©ÑØxÖáµÄÕý·½Ïò´«²¥£»¼òгºá²¨ b£¨Í¼ÖÐʵÏßËùʾ£©ÑØxÖáµÄ¸º·½Ïò´«²¥ÒÑ֪λÓÚx=45m´¦µÄÖʵãPµÚÒ»´Îµ½´ïƽºâλÖÃËùÐèµÄʱ¼äΪ0.5s£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010Äê¹ãÎ÷ÁøÖݶþÖиßÈýµÚÈý´ÎÄ£Ä⿼ÊÔ£¨Àí¿Æ×ۺϣ©ÎïÀí²¿·Ö ÌâÐÍ£ºÑ¡ÔñÌâ

Á½Áмòгºá²¨ÔÚͬһ½éÖÊÖÐÏàÏò´«²¥£¬t=0ʱ¿Ì£¬ÕâÁ½Áв¨µÄ²¨¶¯Í¼ÏñÈçͼËùʾ£®ÆäÖмòгºá¶Éa(ͼÖÐÐéÏßËùʾ)ÑØxÖáµÄÕý·½Ïò´«²¥£»¼òгºá²¨b(ͼÖÐʵÏßËùʾ)ÑØxÖáµÄ¸º·½Ïò´«²¥ÒÑ֪λÓÚx=45 m´¦µÄÖʵãPµÚÒ»´Îµ½´ïƽºâλÖÃËùÐèµÄʱ¼äΪ0£®5 s£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ

A£®²¨µÄ´«²¥ËÙ¶ÈΪ30 m£¯s  B£®²¨µÄƵÂÊΪ0£®25 HZ

C£®ÖʵãPµÄÕñ·ùΪ0£®4 cm  D£®´Ëʱ¿ÌÖʵãPÏòyÖáÕý·½ÏòÔ˶¯

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

 Á½Áмòгºá¶ÉÔÚͬһ½éÖÊÖÐÏàÏò´«²¥£¬t=0ʱ¿Ì£¬

  ÕâÁ½Áв¨µÄ²¨¶¯Í¼ÏñÈçͼËùʾ£®ÆäÖмòгºá¶Éa

  (ͼÖÐÐéÏßËùʾ)ÑØxÖáµÄÕý·½Ïò´«²¥£»¼òгºá²¨

  b(ͼÖÐʵÏßËùʾ)ÑØxÖáµÄ¸º·½Ïò´«²¥ÒÑ֪λ

ÓÚx=45 m´¦µÄÖʵãPµÚÒ»´Îµ½´ïƽºâλÖÃËùÐè

µÄʱ¼äΪ0£®5 s£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ

  A£®²¨µÄ´«²¥ËÙ¶ÈΪ30 m£¯s  B£®²¨µÄƵÂÊΪ0£®25 HZ

  C£®ÖʵãPµÄÕñ·ùΪ0£®4 cm  D£®´Ëʱ¿ÌÖʵãPÏòyÖáÕý·½ÏòÔ˶¯

 

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2010Äê¹ãÎ÷ÁøÖݶþÖиßÈýµÚÈý´ÎÄ£Ä⿼ÊÔ£¨Àí¿Æ×ۺϣ©ÎïÀí²¿·Ö ÌâÐÍ£ºµ¥Ñ¡Ìâ

Á½Áмòгºá²¨ÔÚͬһ½éÖÊÖÐÏàÏò´«²¥£¬t=0ʱ¿Ì£¬ÕâÁ½Áв¨µÄ²¨¶¯Í¼ÏñÈçͼËùʾ£®ÆäÖмòгºá¶Éa(ͼÖÐÐéÏßËùʾ)ÑØxÖáµÄÕý·½Ïò´«²¥£»¼òгºá²¨b(ͼÖÐʵÏßËùʾ)ÑØxÖáµÄ¸º·½Ïò´«²¥ÒÑ֪λÓÚx="45" m´¦µÄÖʵãPµÚÒ»´Îµ½´ïƽºâλÖÃËùÐèµÄʱ¼äΪ0£®5 s£¬ÔòÏÂÁÐ˵·¨ÕýÈ·µÄÊÇ

A£®²¨µÄ´«²¥ËÙ¶ÈΪ30 m£¯sB£®²¨µÄƵÂÊΪ0£®25 HZ
C£®ÖʵãPµÄÕñ·ùΪ0£®4 cmD£®´Ëʱ¿ÌÖʵãPÏòyÖáÕý·½ÏòÔ˶¯

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸