ÌâÄ¿ÄÚÈÝ
£¨10·Ö£©Ò»¼Ü¾üÓÃÖ±Éý»úÐüÍ£ÔÚ¾àÀëµØÃæ64 mµÄ¸ß´¦£¬½«Ò»Ïä¾üÓÃÎï×ÊÓɾ²Ö¹¿ªÊ¼Í¶Ï£¬Èç¹û²»´ò¿ªÎï×ÊÉϵÄ×Ô¶¯¼õËÙÉ¡£¬Îï×ʾ4sÂäµØ¡£ÎªÁË·ÀÖ¹Îï×ÊÓëµØÃæµÄ¾çÁÒײ»÷£¬ÐëÔÚÎï×ʾàÀëµØÃæÒ»¶¨¸ß¶Èʱ½«Îï×ÊÉÏЯ´øµÄ×Ô¶¯¼õËÙÉ¡´ò¿ª¡£ÒÑÖªÎï×ʽӴ¥µØÃæµÄ°²È«ÏÞËÙΪ2m/s£¬¼õËÙÉ¡´ò¿ªºóÎï×ÊËùÊÜ¿ÕÆø×èÁ¦ÊÇ´ò¿ªÇ°µÄ18±¶¡£¼õËÙÉ¡´ò¿ªÇ°ºó¿ÕÆø×èÁ¦¾ùÈÏΪ´óС²»±ä£¬ºöÂÔ¼õËÙÉ¡´ò¿ªµÄʱ¼ä£¬È¡g="10" m/s2¡£Çó£º
£¨1£©¼õËÙÉ¡´ò¿ªºóÎï×ʵļÓËÙ¶ÈΪ¶à´ó£¿
£¨2£©¼õËÙÉ¡´ò¿ªÊ±Îï×ÊËÙ¶È×î¶àΪ¶àÉÙ£¿
£¨1£©¼õËÙÉ¡´ò¿ªºóÎï×ʵļÓËÙ¶ÈΪ¶à´ó£¿
£¨2£©¼õËÙÉ¡´ò¿ªÊ±Îï×ÊËÙ¶È×î¶àΪ¶àÉÙ£¿
£¨1£©26m/s2
£¨2£©v0=28m/s
£¨2£©v0=28m/s
ÉèÎï×ÊÖÊÁ¿Îªm£¬²»´ò¿ªÉ¡µÄÇé¿öÏ£¬
Îï×ʾt=4sÂäµØ¡£ÓÉÅ£¶ÙµÚ¶þ¶¨ÂɺÍÔ˶¯Ñ§¹«Ê½µÃ
£¨1·Ö£©
£¨1·Ö£©
½âµÃ 8m/s2£¬ £¨2·Ö£©
ÉèÎï×ÊÂäµØËÙ¶ÈǡΪv=2m/sʱ£¬¼õËÙÉ¡´ò¿ªµÄ¸ß¶ÈΪh£¬¿ªÉ¡Ê±Îï×ʵÄËÙ¶ÈΪv0£¬ÓÉÅ£¶ÙµÚ¶þ¶¨ÂɺÍÔ˶¯Ñ§¹«Ê½µÃ
£¨2·Ö£©
£¨1·Ö£© £¨1·Ö£©
½âµÃ£º26m/s2 £¨1·Ö£© v0="28m/s " £¨1·Ö£©
Îï×ʾt=4sÂäµØ¡£ÓÉÅ£¶ÙµÚ¶þ¶¨ÂɺÍÔ˶¯Ñ§¹«Ê½µÃ
£¨1·Ö£©
£¨1·Ö£©
½âµÃ 8m/s2£¬ £¨2·Ö£©
ÉèÎï×ÊÂäµØËÙ¶ÈǡΪv=2m/sʱ£¬¼õËÙÉ¡´ò¿ªµÄ¸ß¶ÈΪh£¬¿ªÉ¡Ê±Îï×ʵÄËÙ¶ÈΪv0£¬ÓÉÅ£¶ÙµÚ¶þ¶¨ÂɺÍÔ˶¯Ñ§¹«Ê½µÃ
£¨2·Ö£©
£¨1·Ö£© £¨1·Ö£©
½âµÃ£º26m/s2 £¨1·Ö£© v0="28m/s " £¨1·Ö£©
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿