ÌâÄ¿ÄÚÈÝ
Èçͼ1ËùʾÊÇСÐìͬѧ×ö¡°Ì½¾¿×ö¹¦ÓëËٶȱ仯µÄ¹Øϵ¡±µÄʵÑé×°Öã®Ëû½«¹âµçÃŹ̶¨ÔÚÖ±¹ìµÀÉϵÄOµã£¬ÓÃͬһÖØÎïͨ¹ýϸÏßÀͬһС³µ£¬Ã¿´ÎС³µ¶¼´Ó²»Í¬Î»ÖÃÓɾ²Ö¹ÊÍ·Å£¬¸÷λ
ÖÃA¡¢B¡¢C¡¢D¡¢E¡¢F¡¢G£¨Í¼ÖÐÖ»±ê³öÁËO¡¢G£©ÀëOµãµÄ¾àÀëd·Ö±ðΪ8cm¡¢16cm¡¢24cm¡¢32cm¡¢40cm¡¢48cm£¬56cm£®
£¨1£©¸ÃʵÑéÊÇ·ñÐèÒª²âÁ¿ÖØÎïµÄÖØÁ¦______£¨Ìî¡°ÐèÒª¡±»ò¡°²»ÐèÒª¡±£©£»
£¨2£©¸ÃʵÑéÊÇ·ñ±ØÐëƽºâĦ²ÁÁ¦£¿______£¨Ìî¡°ÊÇ¡±»ò¡°·ñ¡±£©£»
£¨3£©ÎªÁË̽¾¿×ö¹¦ÓëËٶȱ仯µÄ¹æÂÉ£¬ÒÀ´ÎµÃµ½µÄʵÑéÊý¾Ý¼Ç¼Èç±íËùʾ£®ÇëÑ¡È¡ÆäÖÐ×îºÏÊʵÄÁ½ÐÐÊý¾ÝÔÚ´ðÌâ¾íµÄ·½¸ñÖ½ÄÚÃèµã×÷ͼ£®
£¨4£©´Óͼ2µÄͼÏóµÃµ½µÄÖ±½Ó½áÂÛÊÇ______£¬´Ó¶ø¼ä½ÓµÃµ½×ö¹¦ÓëÎïÌåËٶȱ仯µÄ¹æÂÉÊÇ______£®
![](http://thumb.1010pic.com/pic2/upload/papers/20140611/2014061109533088115000.png)
ÖÃA¡¢B¡¢C¡¢D¡¢E¡¢F¡¢G£¨Í¼ÖÐÖ»±ê³öÁËO¡¢G£©ÀëOµãµÄ¾àÀëd·Ö±ðΪ8cm¡¢16cm¡¢24cm¡¢32cm¡¢40cm¡¢48cm£¬56cm£®
£¨1£©¸ÃʵÑéÊÇ·ñÐèÒª²âÁ¿ÖØÎïµÄÖØÁ¦______£¨Ìî¡°ÐèÒª¡±»ò¡°²»ÐèÒª¡±£©£»
£¨2£©¸ÃʵÑéÊÇ·ñ±ØÐëƽºâĦ²ÁÁ¦£¿______£¨Ìî¡°ÊÇ¡±»ò¡°·ñ¡±£©£»
£¨3£©ÎªÁË̽¾¿×ö¹¦ÓëËٶȱ仯µÄ¹æÂÉ£¬ÒÀ´ÎµÃµ½µÄʵÑéÊý¾Ý¼Ç¼Èç±íËùʾ£®ÇëÑ¡È¡ÆäÖÐ×îºÏÊʵÄÁ½ÐÐÊý¾ÝÔÚ´ðÌâ¾íµÄ·½¸ñÖ½ÄÚÃèµã×÷ͼ£®
£¨4£©´Óͼ2µÄͼÏóµÃµ½µÄÖ±½Ó½áÂÛÊÇ______£¬´Ó¶ø¼ä½ÓµÃµ½×ö¹¦ÓëÎïÌåËٶȱ仯µÄ¹æÂÉÊÇ______£®
ʵÑé´ÎÊý | 1 | 2 | 3 | 4 | 5 | 6 | 7 | ||||
d/¡Á10-2m | 8.00 | 16.00 | 24.00 | 32.00 | 40.00 | 48.00 | 56.00 | ||||
v/£¨m/s£© | 0.49 | 0.69 | 0.85 | 0.99 | 1.09 | 1.21 | 1.50 | ||||
v2/£¨m/s£©2 | 0.24 | 0.48 | 0.72 | 0.98 | 1.19 | 1.46 | 2.25 | ||||
| 0.70 | 0.83 | 0.92 | 1.00 | 1.04 | 1.10 | 1.23 |
![](http://thumb.1010pic.com/pic2/upload/papers/20140611/2014061109533088115000.png)
£¨1£©¸ÃʵÑéÖУ¬¸ù¾ÝW=Fs£¬F=maºÍs=
£¬¿ÉµÃ£¬Fs=
m
-
m
£¬¼´ÍâÁ¦×ö¹¦ÓëÎïÌåµÄÖÊÁ¿Î޹أ¬ÊµÑé²»ÐèÒª²âÁ¿ÎïÌåµÄÖÊÁ¿£¨ÖØÁ¦£©£»
£¨2£©¸ÃʵÑéÖÐÒѾ²âÁ¿ÁËÎïÌåµÄλÒÆÓëËٶȣ¬À´Ì½¾¿ºÏÍâÁ¦ÓëÎïÌåµÄËٶȵı仯¹Øϵ£¬ËùÒÔÊÇ·ñ´æÔÚĦ²ÁÁ¦¶Ô¸ÃʵÑéûÓÐÓ°Ï죮¹Ê²»ÐèҪƽºâĦ²ÁÁ¦£®
£¨3£©¸ù¾Ý±í¸ñÖмǼµÄÊý¾Ý¿ÉµÃ£¬ÎïÌåµÄλÒÆdÓëÎïÌåµÄËٶȡ¢ÒÔ¼°ËٶȵÄƽ·½¸ù¶¼²»´æÔÚÕý±ÈÀýµÄ¹Øϵ£¬ÓëËٶȵÄƽ·½½Ó½üÕý±ÈÀý¹Øϵ£¬ËùÒÔ¿ÉÑ¡Ôñv2Ϊ×ø±êϵµÄ×Ý×ø±ê£®½«±í¸ñÖеÄÊý¾ÝÔÚd-v2×ø±êϵÖÐÃèµãÁ¬ÏßÈçͼ£®
£¨4£©´Óͼ2µÄͼÏóµÃµ½µÄÖ±½Ó½áÂÛÊÇdÓëv2³ÉÕý±È£»´Ó¶ø¼ä½ÓµÃµ½×ö¹¦ÓëÎïÌåËٶȱ仯µÄ¹æÂÉÊǺÏÍâÁ¦×ö¹¦Óëv2³ÉÕý±È£®
¹Ê´ð°¸Îª£º£¨1£©²»ÐèÒª£»£¨2£©·ñ£»£¨3£©Èçͼ£»£¨4£©dÓëv2³ÉÕý±È£¬ºÏÍâÁ¦×ö¹¦Óëv2³ÉÕý±È£®
![](http://thumb.1010pic.com/pic2/upload/papers/20140611/201406110953315999882.png)
| ||||
2a |
1 |
2 |
v | 2t |
1 |
2 |
v | 20 |
£¨2£©¸ÃʵÑéÖÐÒѾ²âÁ¿ÁËÎïÌåµÄλÒÆÓëËٶȣ¬À´Ì½¾¿ºÏÍâÁ¦ÓëÎïÌåµÄËٶȵı仯¹Øϵ£¬ËùÒÔÊÇ·ñ´æÔÚĦ²ÁÁ¦¶Ô¸ÃʵÑéûÓÐÓ°Ï죮¹Ê²»ÐèҪƽºâĦ²ÁÁ¦£®
£¨3£©¸ù¾Ý±í¸ñÖмǼµÄÊý¾Ý¿ÉµÃ£¬ÎïÌåµÄλÒÆdÓëÎïÌåµÄËٶȡ¢ÒÔ¼°ËٶȵÄƽ·½¸ù¶¼²»´æÔÚÕý±ÈÀýµÄ¹Øϵ£¬ÓëËٶȵÄƽ·½½Ó½üÕý±ÈÀý¹Øϵ£¬ËùÒÔ¿ÉÑ¡Ôñv2Ϊ×ø±êϵµÄ×Ý×ø±ê£®½«±í¸ñÖеÄÊý¾ÝÔÚd-v2×ø±êϵÖÐÃèµãÁ¬ÏßÈçͼ£®
£¨4£©´Óͼ2µÄͼÏóµÃµ½µÄÖ±½Ó½áÂÛÊÇdÓëv2³ÉÕý±È£»´Ó¶ø¼ä½ÓµÃµ½×ö¹¦ÓëÎïÌåËٶȱ仯µÄ¹æÂÉÊǺÏÍâÁ¦×ö¹¦Óëv2³ÉÕý±È£®
¹Ê´ð°¸Îª£º£¨1£©²»ÐèÒª£»£¨2£©·ñ£»£¨3£©Èçͼ£»£¨4£©dÓëv2³ÉÕý±È£¬ºÏÍâÁ¦×ö¹¦Óëv2³ÉÕý±È£®
![](http://thumb.1010pic.com/pic2/upload/papers/20140611/201406110953315999882.png)
![](http://thumb2018.1010pic.com/images/loading.gif)
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿