2009Äê12Ô¸£Ïö¯³µ×é½øÈëÊÔÔËÐн׶Σ®°Ñ¶¯Á¦×°Ö÷ÖÉ¢°²×°ÔÚÿ½Ú³µÏáÉÏ£¬Ê¹Æä¼È¾ßÓÐÇ£Òý¶¯Á¦£¬ÓÖ¿ÉÒÔÔØ¿Í£¬ÕâÑùµÄ¿Í³µ³µÏá±ã½Ð×ö¶¯³µ£®¶ø¶¯³µ×é¾ÍÊǼ¸½Ú×Ô´ø¶¯Á¦µÄ³µÏá¼Ó¼¸½Ú²»´ø¶¯Á¦µÄ³µÏá±à³ÉÒ»×飬¾ÍÊǶ¯³µ×飮´ø¶¯Á¦µÄ³µÏá½Ð¶¯³µ£¬²»´ø¶¯Á¦µÄ³µÏá½ÐÍϳµ£®É趯³µ×éÔËÐйý³ÌÖеÄ×èÁ¦ÓëÖÊÁ¿³ÉÕý±È£¬Ã¿½Ú¶¯³µÓëÍϳµµÄÖÊÁ¿¶¼ÏàµÈ£¬Ã¿½Ú¶¯³µµÄ¶î¶¨¹¦Âʶ¼ÏàµÈ£¬Èô¿ª1½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ120km/h£»¸ÄΪ¿ª5½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ£¨¡¡¡¡£©
·ÖÎö£ºµ±Ç£ÒýÁ¦µÈÓÚ×èÁ¦Ê±£¬¶¯³µ×éµÄËÙ¶È×î´ó£¬¸ù¾Ý¹¦ÂÊÓëÇ£ÒýÁ¦µÄ¹Øϵ£¬Çó³ö¶¯³µµÄ×î´óËٶȣ®
½â´ð£º½â£ºÉèÿ½Ú¶¯³µµÄ¶î¶¨¹¦ÂÊΪP£¬Ã¿½Ú³µÏáËùÊܵÄ×èÁ¦Îªf£¬Èô¿ª1½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬ÓУºP=Fv1=4fv1£®
¸ÄΪ¿ª5½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬ÓУº5P=F¡äv2=8fv2£®
ÁªÁ¢Á½Ê½½âµÃ£º
v1
v2
=
2
5
£®ÒòΪv1=120km/h£¬ËùÒÔv2=300km/h£®¹ÊCÕýÈ·£¬A¡¢B¡¢D´íÎó£®
¹ÊÑ¡C£®
µãÆÀ£º½â¾ö±¾ÌâµÄ¹Ø¼üÖªµÀ¹¦ÂÊÓëÇ£ÒýÁ¦µÄ¹Øϵ£¬ÒÔ¼°ÖªµÀµ±Ç£ÒýÁ¦µÈÓÚ×èÁ¦Ê±ËÙ¶È×î´ó£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÏ°Ìâ

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º ÌâÐÍ£º

2009Äê12Ô¸£Ïö¯³µ×é½øÈëÊÔÔËÐн׶Σ®°Ñ¶¯Á¦×°Ö÷ÖÉ¢°²×°ÔÚÿ½Ú³µÏáÉÏ£¬Ê¹Æä¼È¾ßÓÐÇ£Òý¶¯Á¦£¬ÓÖ¿ÉÒÔÔØ¿Í£¬ÕâÑùµÄ¿Í³µ³µÏá±ã½Ð×ö¶¯³µ£®¶ø¶¯³µ×é¾ÍÊǼ¸½Ú×Ô´ø¶¯Á¦µÄ³µÏá¼Ó¼¸½Ú²»´ø¶¯Á¦µÄ³µÏá±à³ÉÒ»×飮´ø¶¯Á¦µÄ³µÏá½Ð¶¯³µ£¬²»´ø¶¯Á¦µÄ³µÏá½ÐÍϳµ£®É趯³µ×éÔËÐйý³ÌÖеÄ×èÁ¦ÓëÖÊÁ¿³ÉÕý±È£¬Ã¿½Ú¶¯³µÓëÍϳµµÄÖÊÁ¿¶¼ÏàµÈ£¬Ã¿½Ú¶¯³µµÄ¶î¶¨¹¦Âʶ¼ÏàµÈ£¬Èô¿ªÒ»½Ú¶¯³µ´øÈý½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ120 km/h£»¸ÄΪ¿ªÎå½Ú¶¯³µ´øÈý½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ(¡¡¡¡)

A£®60 km/h  B£®240 km/h

C£®300 km/h  D£®600 km/h

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º²»Ïê ÌâÐÍ£ºµ¥Ñ¡Ìâ

2009Äê12Ô¸£Ïö¯³µ×é½øÈëÊÔÔËÐн׶Σ®°Ñ¶¯Á¦×°Ö÷ÖÉ¢°²×°ÔÚÿ½Ú³µÏáÉÏ£¬Ê¹Æä¼È¾ßÓÐÇ£Òý¶¯Á¦£¬ÓÖ¿ÉÒÔÔØ¿Í£¬ÕâÑùµÄ¿Í³µ³µÏá±ã½Ð×ö¶¯³µ£®¶ø¶¯³µ×é¾ÍÊǼ¸½Ú×Ô´ø¶¯Á¦µÄ³µÏá¼Ó¼¸½Ú²»´ø¶¯Á¦µÄ³µÏá±à³ÉÒ»×飬¾ÍÊǶ¯³µ×飮´ø¶¯Á¦µÄ³µÏá½Ð¶¯³µ£¬²»´ø¶¯Á¦µÄ³µÏá½ÐÍϳµ£®É趯³µ×éÔËÐйý³ÌÖеÄ×èÁ¦ÓëÖÊÁ¿³ÉÕý±È£¬Ã¿½Ú¶¯³µÓëÍϳµµÄÖÊÁ¿¶¼ÏàµÈ£¬Ã¿½Ú¶¯³µµÄ¶î¶¨¹¦Âʶ¼ÏàµÈ£¬Èô¿ª1½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ120km/h£»¸ÄΪ¿ª5½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ£¨¡¡¡¡£©
A£®60km/hB£®240km/hC£®300km/hD£®600km/h
¾«Ó¢¼Ò½ÌÍø

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2011-2012ѧÄê½­ËÕÊ¡ÑγÇÖÐѧ¸ßÈý£¨ÉÏ£©ÆÚÖÐÎïÀíÊÔ¾í£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

2009Äê12Ô¸£Ïö¯³µ×é½øÈëÊÔÔËÐн׶Σ®°Ñ¶¯Á¦×°Ö÷ÖÉ¢°²×°ÔÚÿ½Ú³µÏáÉÏ£¬Ê¹Æä¼È¾ßÓÐÇ£Òý¶¯Á¦£¬ÓÖ¿ÉÒÔÔØ¿Í£¬ÕâÑùµÄ¿Í³µ³µÏá±ã½Ð×ö¶¯³µ£®¶ø¶¯³µ×é¾ÍÊǼ¸½Ú×Ô´ø¶¯Á¦µÄ³µÏá¼Ó¼¸½Ú²»´ø¶¯Á¦µÄ³µÏá±à³ÉÒ»×飬¾ÍÊǶ¯³µ×飮´ø¶¯Á¦µÄ³µÏá½Ð¶¯³µ£¬²»´ø¶¯Á¦µÄ³µÏá½ÐÍϳµ£®É趯³µ×éÔËÐйý³ÌÖеÄ×èÁ¦ÓëÖÊÁ¿³ÉÕý±È£¬Ã¿½Ú¶¯³µÓëÍϳµµÄÖÊÁ¿¶¼ÏàµÈ£¬Ã¿½Ú¶¯³µµÄ¶î¶¨¹¦Âʶ¼ÏàµÈ£¬Èô¿ª1½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ120km/h£»¸ÄΪ¿ª5½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ£¨ £©

A£®60km/h
B£®240km/h
C£®300km/h
D£®600km/h

²é¿´´ð°¸ºÍ½âÎö>>

¿ÆÄ¿£º¸ßÖÐÎïÀí À´Ô´£º2011Äê9Ô¸߿¼ÎïÀí°ÙÌ⾫Á·£¨¶þ£©£¨½âÎö°æ£© ÌâÐÍ£ºÑ¡ÔñÌâ

2009Äê12Ô¸£Ïö¯³µ×é½øÈëÊÔÔËÐн׶Σ®°Ñ¶¯Á¦×°Ö÷ÖÉ¢°²×°ÔÚÿ½Ú³µÏáÉÏ£¬Ê¹Æä¼È¾ßÓÐÇ£Òý¶¯Á¦£¬ÓÖ¿ÉÒÔÔØ¿Í£¬ÕâÑùµÄ¿Í³µ³µÏá±ã½Ð×ö¶¯³µ£®¶ø¶¯³µ×é¾ÍÊǼ¸½Ú×Ô´ø¶¯Á¦µÄ³µÏá¼Ó¼¸½Ú²»´ø¶¯Á¦µÄ³µÏá±à³ÉÒ»×飬¾ÍÊǶ¯³µ×飮´ø¶¯Á¦µÄ³µÏá½Ð¶¯³µ£¬²»´ø¶¯Á¦µÄ³µÏá½ÐÍϳµ£®É趯³µ×éÔËÐйý³ÌÖеÄ×èÁ¦ÓëÖÊÁ¿³ÉÕý±È£¬Ã¿½Ú¶¯³µÓëÍϳµµÄÖÊÁ¿¶¼ÏàµÈ£¬Ã¿½Ú¶¯³µµÄ¶î¶¨¹¦Âʶ¼ÏàµÈ£¬Èô¿ª1½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ120km/h£»¸ÄΪ¿ª5½Ú¶¯³µ´ø3½ÚÍϳµÊ±£¬×î´óËÙ¶ÈΪ£¨ £©

A£®60km/h
B£®240km/h
C£®300km/h
D£®600km/h

²é¿´´ð°¸ºÍ½âÎö>>

ͬ²½Á·Ï°²á´ð°¸