ÌâÄ¿ÄÚÈÝ
£¨1£©ÔÚ×öÑéÖ¤Á¦µÄƽÐÐËıßÐж¨ÔòʵÑéÖУº³ýÁË·½Ä¾°å¡¢°×Ö½¡¢Í¼¶¤¡¢Ï¸ÏßÌס¢ÏðƤÌõ¡¢Ç¦±Ê¡¢Èý½Ç°åºÍ¿Ì¶È³ßÍ⣬»¹ÐèÒªµÄÆ÷²ÄÓУº______£®ÔÚ´ËʵÑéÖУ¬¼ÙÈçF1µÄ´óС¼°·½Ïò¹Ì¶¨²»±ä£¬ÄÇôΪÁËʹÏðƤÌõÈÔÈ»É쳤µ½Oµã£¬¶ÔF2À´Ëµ£¬ÏÂÃ漸ÖÖ˵·¨ÖÐÕýÈ·µÄÊÇ£º______
A£®F2¿ÉÒÔÓжà¸ö·½Ïò
B£®F2µÄ·½ÏòºÍ´óС¿ÉÒÔÓжà¸öÖµ
C£®F2µÄ·½ÏòºÍ´óСÊÇΩһȷ¶¨Öµ
D£®F2µÄ·½ÏòÊÇΩһµÄ£¬µ«´óС¿ÉÓжà¸öÖµ
£¨2£©Ò»Ð¡ÇòÑع⻬бÃæÏòÏÂÔ˶¯£¬ÓÃÿ¸ô0.1sÆعâÒ»´ÎµÄƵÉÁÕÕÏà»úÅÄÉãϲ»Í¬Ê±¿ÌСÇòµÄλÖÃÕÕƬÈçͼËùʾ£¬Ñ¡Ð¡ÇòµÄÎå¸öÁ¬ÐøλÖÃA¡¢B¡¢C¡¢D¡¢E½øÐвâÁ¿£¬²âµÃ¾àÀës1¡¢s2¡¢s3¡¢s4µÄÊý¾ÝÈç±í¸ñËùʾ£®£¨±£ÁôÈýλÓÐЧÊý×Ö£©
¢ÙÅжÏСÇò×÷______Ô˶¯£¬Åжϵĸù¾ÝÊÇ£º______£®
¢ÚСÇòÑØбÃæÏ»¬µÄ¼ÓËٶȵĴóСΪ______m/s2£®
¢ÛСÇòÔÚλÖÃCµÄËÙ¶ÈΪ______m/s£®
A£®F2¿ÉÒÔÓжà¸ö·½Ïò
B£®F2µÄ·½ÏòºÍ´óС¿ÉÒÔÓжà¸öÖµ
C£®F2µÄ·½ÏòºÍ´óСÊÇΩһȷ¶¨Öµ
D£®F2µÄ·½ÏòÊÇΩһµÄ£¬µ«´óС¿ÉÓжà¸öÖµ
£¨2£©Ò»Ð¡ÇòÑع⻬бÃæÏòÏÂÔ˶¯£¬ÓÃÿ¸ô0.1sÆعâÒ»´ÎµÄƵÉÁÕÕÏà»úÅÄÉãϲ»Í¬Ê±¿ÌСÇòµÄλÖÃÕÕƬÈçͼËùʾ£¬Ñ¡Ð¡ÇòµÄÎå¸öÁ¬ÐøλÖÃA¡¢B¡¢C¡¢D¡¢E½øÐвâÁ¿£¬²âµÃ¾àÀës1¡¢s2¡¢s3¡¢s4µÄÊý¾ÝÈç±í¸ñËùʾ£®£¨±£ÁôÈýλÓÐЧÊý×Ö£©
s1£¨cm£© | s2£¨cm£© | s3£¨cm£© | s4£¨cm£© |
8.20 | 9.30 | 10.40 | 11.50 |
¢ÚСÇòÑØбÃæÏ»¬µÄ¼ÓËٶȵĴóСΪ______m/s2£®
¢ÛСÇòÔÚλÖÃCµÄËÙ¶ÈΪ______m/s£®
£¨1£©ÔÚÑо¿¹²µãÁ¦µÄºÏ³ÉʵÑéʱ£¬ÎÒÃÇͨ¹ýÓÃÒ»¸ùϸÉþºÍÁ½¸ùϸÉþÀ¶¯ÏðƤ½î´ïµ½Í¬Ò»Î»Ö㬶øʹЧ¹ûÏàͬ£»ÔÚʵÑéÖÐÓ¦²âÁ¿µ¯Á¦µÄ´óС£¬¹Ê»¹ÐèÒªµ¯»É³Ó£®ÒòÒ»¸öµ¯»É³ÓµÄÀÁ¦´óС¡¢·½Ïò²»±ä£¬¶øÏðƤ½îÉ쳤µ½Oµã£¬ËµÃ÷ºÏÁ¦²»±ä£¬ÔòÓÉƽÐÐËıßÐζ¨Ôò¿ÉÖªÁíÒ»¸ö´óС·½ÏòҲΨһȷ¶¨£¬¹ÊABD´íÎó£¬CÕýÈ·£®
£¨2£©¢ÙÓɱí¸ñ¿ÉÖªÏàµÈʱ¼äÄÚµÄλÒÆÖ®²î¶¼Îª1.10cm£¬ËùÒÔСÇò×öÔȼÓËÙÖ±ÏßÔ˶¯£»
¢Ú¸ù¾ÝÍÆÂÛµÃs2-s1=aT2£¬T=0.1s£¬µÃ£¬a=
=
=1.10m/s2
¢ÛСÇòÔÚλÖÃCµÄËÙ¶ÈvC=
=
=0.985m/s
¹Ê´ð°¸Îª£º£¨1£©µ¯»É³Ó C
£¨2£©¢ÙÔȼÓËÙÖ±Ïߣ»ÔÚÁ¬ÐøÏàµÈʱ¼äÄÚСÇòµÄλÒƲîÖµÏàµÈ
¢Ú1.10m/s2
¢Û0.985m/s
£¨2£©¢ÙÓɱí¸ñ¿ÉÖªÏàµÈʱ¼äÄÚµÄλÒÆÖ®²î¶¼Îª1.10cm£¬ËùÒÔСÇò×öÔȼÓËÙÖ±ÏßÔ˶¯£»
¢Ú¸ù¾ÝÍÆÂÛµÃs2-s1=aT2£¬T=0.1s£¬µÃ£¬a=
¡÷s |
T2 |
0.011 |
0.01 |
¢ÛСÇòÔÚλÖÃCµÄËÙ¶ÈvC=
s2+s3 |
2T |
0.093+0.104 |
0.2 |
¹Ê´ð°¸Îª£º£¨1£©µ¯»É³Ó C
£¨2£©¢ÙÔȼÓËÙÖ±Ïߣ»ÔÚÁ¬ÐøÏàµÈʱ¼äÄÚСÇòµÄλÒƲîÖµÏàµÈ
¢Ú1.10m/s2
¢Û0.985m/s
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿