2008Äê4ÔÂ28ÈÕÁ賿£¬É½¶«¾³ÄÚ·¢ÉúÁ½ÁÐÁгµÏàײʹʣ¬

Ôì³ÉÁË´óÁ¿ÈËÔ±ÉËÍöºÍ²Æ²úËðʧ¡£Òý·¢Ê¹ʵÄÖ÷ÒªÔ­Òò

ÊÇÆäÖÐÒ»ÁÐÁгµ×ªÍäʱ³¬ËÙÐÐÊ»Ôì³ÉµÄ¡£ÈçͼËùʾ£¬ÊÇ

Ò»ÖÖÐÂÐ͸ßËÙÁгµ£¬µ±ËüתÍäʱ£¬³µÏá»á×Ô¶¯Çãб£¬²ú

ÉúתÍäÐèÒªµÄÏòÐÄÁ¦£»¼ÙÉèÕâÖÖÐÂÐÍÁгµÒÔ 360 km£¯h

µÄËÙ¶ÈÔÚˮƽÃæÄÚתÍ䣬ÍäµÀ°ë¾¶Îª 1.5 km£¬ÔòÖÊÁ¿Îª

75 kgµÄ³Ë¿ÍÔÚ¹ÕÍä¹ý³ÌÖÐËùÊܵ½µÄºÏÍâÁ¦Îª  £¨    £©

    A£®500N         B£®1000N        C£®500N     D£®0 

 

¡¾´ð°¸¡¿

 A½âÎö£º³Ë¿ÍÔÚ¹ÕÍä¹ý³ÌÖÐÓëÁгµÒ»Æð×öÔÈËÙÔ²ÖÜÔ˶¯£¬Êܵ½µÄºÏÍâÁ¦ÌṩÏòÐÄÁ¦£¬ÓÉÅ£¶ÙµÚ¶þ¶¨Âɵà N£¬AÕýÈ·¡£

 

Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

£¨2011?ÄϲýÄ£Ä⣩2008Äê4ÔÂ28ÈÕÁ賿£¬É½¶«¾³ÄÚ·¢ÉúÁ½ÁÐÁгµÏàײʹʣ¬Ôì³ÉÁË´óÁ¿ÈËÔ±ÉËÍöºÍ²Æ²úËðʧ£®Òý·¢Ê¹ʵÄÖ÷ÒªÔ­ÒòÊÇÆäÖÐÒ»ÁÐÁгµ×ªÍäʱ³¬ËÙÐÐÊ»Ôì³ÉµÄ£®Ò»ÖÖÐÂÐ͸ßËÙÁгµ£¬µ±ËüתÍäʱ£¬³µÏá»á×Ô¶¯Çãб£¬²úÉúתÍäÐèÒªµÄÏòÐÄÁ¦£»¼ÙÉèÕâÖÖÐÂÐÍÁгµÒÔ 360km/hµÄËÙ¶ÈÔÚˮƽÃæÄÚתÍ䣬ÍäµÀ°ë¾¶Îª 1.5km£¬ÔòÖÊÁ¿Îª 75kgµÄ³Ë¿ÍÔÚ¹ÕÍä¹ý³ÌÖÐËùÊܵ½µÄºÏÍâÁ¦Îª£¨¡¡¡¡£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

2008Äê4ÔÂ28ÈÕ4ʱ41·Ö£¬±±¾©¿ªÍùÇൺµÄT195´ÎÂÿÍÁгµÔËÐÐÖÁɽ¶«Ê¡¾³ÄÚ½º¼ÃÌú·ÖÜ´åÖÁÍõ´å¼äÍѹ죬ÓëÑĮ̀ÖÁÐìÖݵÄ5034´Î¿Í³µÏàײ£¬¾ÝÁ˽⣬¸Ã·¶ÎΪ½Ç¶È½Ï¼±µÄ´óÍäµÀ£¬±±¾©ÖÁÇൺµÄT195´ÎÁгµÑÏÖس¬ËÙ´Ó¶øÒýÆðÍѹ죬ÈôÒÑÖª¸ÃÍäµÀµÄÇúÂʰ뾶R=625m£¬Á½Ìú¹ì¼ä¹ì¾àL=1435ºÁÃ×£¬ÍäµÀÄÚÍâ¹ìµÀ¸ß¶È²îh=143.5ºÁÃ×£¬Ìú¹ìÄܳÐÊܵÄ×î´óˮƽ¸½¼Ó²àÏòÁ¦Îª³µÖØÁ¦µÄk±¶£¬k=4.4%£¬ÎʸÃÁгµµÄËÙ¶ÈÖÁÉÙΪ¶àÉÙʱ²Åµ¼ÖÂÍѹ죿£¨È¡g=10m/s2£¬ÓÉÓÚ»ð³µÁ½¹ìµÀµÄÇã½Ç½ÏС£¬sin¦È¡Ötan¦È£©

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

2008Äê4ÔÂ28ÈÕÁ賿£¬É½¶«¾³ÄÚ·¢ÉúÁ½ÁÐÁгµÏàײʹʣ¬Ôì³ÉÁË´óÁ¿ÈËÔ±ÉËÍöºÍ²Æ²úËðʧ£®Òý·¢Ê¹ʵÄÖ÷ÒªÔ­ÒòÊÇÆäÖÐÒ»ÁÐÁгµ×ªÍäʱ³¬ËÙÐÐÊ»£®ÈçÓÒͼËùʾ£¬ÊÇÒ»ÖÖÐÂÐ͸ßËÙÁгµ£¬µ±ËüתÍäʱ£¬³µÏá»á×Ô¶¯Çãб£¬ÌṩתÍäÐèÒªµÄÏòÐÄÁ¦£»¼ÙÉèÕâÖÖÐÂÐÍÁгµÒÔ360 km/hµÄËÙ¶ÈÔÚˮƽÃæÄÚתÍ䣬ÍäµÀ°ë¾¶Îª1.5 km£¬ÔòÖÊÁ¿Îª 75 kgµÄ³Ë¿ÍÔÚÁгµ×ªÍä¹ý³ÌÖÐËùÊܵ½µÄºÏÍâÁ¦Îª(¡¡¡¡)

A£®500 N¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡                    B£®1 000 N

C£®500 N                                       D£®0

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

 2008Äê4ÔÂ28ÈÕÁ賿£¬É½¶«¾³ÄÚ·¢ÉúÁ½ÁÐÁгµÏàײʹʣ¬

Ôì³ÉÁË´óÁ¿ÈËÔ±ÉËÍöºÍ²Æ²úËðʧ¡£Òý·¢Ê¹ʵÄÖ÷ÒªÔ­Òò

ÊÇÆäÖÐÒ»ÁÐÁгµ×ªÍäʱ³¬ËÙÐÐÊ»Ôì³ÉµÄ¡£ÈçͼËùʾ£¬ÊÇ

Ò»ÖÖÐÂÐ͸ßËÙÁгµ£¬µ±ËüתÍäʱ£¬³µÏá»á×Ô¶¯Çãб£¬²ú

ÉúתÍäÐèÒªµÄÏòÐÄÁ¦£»¼ÙÉèÕâÖÖÐÂÐÍÁгµÒÔ 360 km£¯h

µÄËÙ¶ÈÔÚˮƽÃæÄÚתÍ䣬ÍäµÀ°ë¾¶Îª 1.5 km£¬ÔòÖÊÁ¿Îª

75 kgµÄ³Ë¿ÍÔÚ¹ÕÍä¹ý³ÌÖÐËùÊܵ½µÄºÏÍâÁ¦Îª  £¨    £©

    A£®500N        B£®1000N        C£®500N     D£®0 

 

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸