ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿ÔËÓÃƵÉÁÕÕƬ·ÖÎö¼ÆË㣬ÊÇÎÒÃǽâ¾öÔ˶¯ÎÊÌâµÄÖØÒª·½·¨¡£
£¨1£©Èçͼ¼×ÊÇÆ»¹ûÏÂÂä¹ý³ÌÖÐÅÄÉãµÄƵÉÁÕÕƬ£¬Ïà»úÿ¸ôÏàµÈÆعâÒ»´Î¡£ÓÉ´Ë¿ÉÅжÏÆ»¹ûµÄÔ˶¯ÊÇ_____£¨Ñ¡Ìî¡°ÔÈËÙ¡±»ò¡°±äËÙ¡±£©Ô˶¯£¬ÆäÀíÓÉÊÇ_____¡£
£¨2£©ÈçͼÒÒËùʾ£¬£¨a£©£¨b£©Á½¸öֽ׶·Ö±ð´Óͬһ¸ß¶ÈÓɾ²Ö¹ÊÍ·Å£¬ÀûÓÃÊúֱשǽΪ±³¾°£¬µ±½øÈëÊúֱשǽµÄÇøÓòʱ£¬ÓÃÕÕÏà»úͨ¹ýÿ¸ô0.2sÆعâÒ»´ÎµÄ·½·¨¼Ç¼ֽ׶µÄÔ˶¯¹ý³Ì¡£Èô£¨a£©Ö½×¶µÄËÙ¶ÈΪ1m/s£®Ôòÿ¿éשµÄ¸ß¶ÈΪ_____m£¬£¨b£©ÏÂÂäµÄËÙ¶ÈΪ_____m/s¡£
¡¾´ð°¸¡¿±äËÙ ÔÚÏàµÈʱ¼äÄÚ£¬Æ»¹ûͨ¹ýµÄ·³Ì²»ÏàµÈ 0.1 1.5
¡¾½âÎö¡¿
£¨1£©·ÖÎöƵÉÁÕÕƬ£¬ÔÚÏàµÈµÄʱ¼äÄÚÆ»¹ûµÄ¼ä¸ôÔ½À´Ô½´ó£¬ÀûÓÃËٶȹ«Ê½²»ÄÑÅжÏÆ»¹ûµÄÔ˶¯×´Ì¬¡£
£¨2£©ÖªµÀaֽ׶µÄËٶȣ¬ÀûÓÃs=vtÇó0.2sÄÚϽµµÄ¾àÀ룬ÓÉͼ֪0.2sÄÚϽµÁ½¿éשµÄ¸ß¶È£¬¾Ý´ËÇóÒ»¿éשµÄ¸ß¶È£»ÔÚÏàͬµÄ¼ä¸ôʱ¼ä0.2sÄÚ£¬£¨a£©Ö½×¶Ï½µ2¿éשµÄ¸ß¶È£¬£¨b£©Ö½×¶Ï½µ3¿éשµÄ¸ß¶È£¬ÀûÓÃv=Çó£¨a£©¡¢£¨b£©Ö½×¶µÄËÙ¶ÈÖ®±È£¬½ø¶øÇó³ö£¨b£©Ö½×¶Ï½µµÄËٶȡ£
(1)ÓÉƵÉÁÕÕƬ¿ÉÒÔ¿´³ö£¬Æ»¹ûÔÚÏàͬʱ¼äÄÚͨ¹ýµÄ·³ÌÔ½À´Ô½´ó£¬ËùÒÔËü×öµÄÊDZäËÙÔ˶¯£»(2)ÓÉÌâÖª(a)ֽ׶µÄËÙ¶ÈΪ1m/s,0.2sÄÚϽµµÄ¾àÀës=vt=1m/s¡Á0.2s=0.2m,ÓÉͼ֪0.2sÄÚϽµÁ½¿éשµÄ¸ß¶È,ËùÒÔÒ»¿éשµÄ¸ß¶Èh=s=¡Á0.2m=0.1m¡£ÔÚÏàͬµÄ¼ä¸ôʱ¼ä0.2sÄÚ,(a)ֽ׶Ͻµ2¿éשµÄ¸ß¶È,(b)ֽ׶Ͻµ3¿éשµÄ¸ß¶È,ÓÉv=¿ÉÖª(a)¡¢(b)ֽ׶µÄËÙ¶ÈÖ®±È=,Ôòvb=va=¡Á1m/s=1.5m/s¡£