ÌâÄ¿ÄÚÈÝ

ijͬѧÀûÓÃÏÂÃæ×°ÖÃÀ´Ñо¿Æ½Å×Ô˶¯µÄ¹æÂÉ£¬Í¼Öе¹ÖõÄÒûÁÏÆ¿ÄÚ×°×ÅË®£¬Æ¿ÈûÄÚ²å×ÅÁ½¸ùÁ½¶Ë¿ª¿ÚµÄϸ¹ÜaºÍb£¬b¹Üˮƽ¶Ë¼Ó½ÓÒ»¶Ë¸üϸµÄÓ²¹Ü×÷ΪÅç×죬ˮ´ÓÅç×ìÖÐÉä³ö£¬ÔÚ¿ÕÖÐÐγÉÍäÐÎϸˮÖù£¬ËüÏÔʾÁËƽÅ×Ô˶¯µÄ¹ì¼££®

£¨1£©¼Ç¼ϸˮÖùµÄ¹ì¼£Ê±Òª×¢ÒâÆ¿ÖÐË®Ãæ²»ÄÜϽµµ½a¹ÜÉÏ¿ÚK´¦Ö®Ï£¬ÕâÊÇΪÁ˱£³Ö£º______£®
£¨2£©¼ÇÏÂË®Á÷Ô˶¯µÄ¹ì¼££¬Í¼ÒÒËùʾµÄA¡¢B¡¢CÊǸù켣ÉϵÄÈýµã£¬ÈôÿС¸ñ±ß³¤¾ùΪL=3.2cm£¬ÔòÿһСˮµÎ´ÓAÔ˶¯µ½BµÄʱ¼äΪ______s£¬Ë®Á÷ƽÅç³öʱµÄ³õËٶȴóСΪ______m/s£¨ÖØÁ¦¼ÓËÙ¶Èg=10m/s2£©
£¨1£©²åÈëÆ¿ÖеÄÁíÒ»¸ùϸ¹ÜÉ϶ËÓë¿ÕÆøÏàͨ£¬k´¦Ë®µÄѹǿʼÖÕµÈÓÚ´óÆøѹ£¬²»ÊÜÆ¿ÄÚË®Ãæ¸ßµÍµÄÓ°Ï죮Òò´Ë£¬ÔÚË®Ãæ½µµ½k´¦ÒÔÇ°µÄºÜ³¤Ò»¶Îʱ¼äÄÚ£¬¶¼¿ÉÒԵõ½Îȶ¨µÄϸˮÖù£®
£¨2£©ÔÚÊúÖ±·½ÏòÉÏ¡÷y=gT2µÃ£º
T=
2l
g
=
2¡Á3.2¡Á10-2m
10m/s2
=0.08s

Ë®Öùˮƽ·½ÏòÉÏ×öÔÈËÙÖ±ÏßÔ˶¯£¬Òò´ËÓУº
x=v0t
v0=
x
t
=
2l
T
=
2¡Á3.2¡Á10-2m
0.08s
=0.8m/s

¹Ê´ð°¸Îª£º£¨1£©0.08£¬£¨2£©0.8£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø