ÌâÄ¿ÄÚÈÝ
ÎÒ¹úÓó¤Õ÷ÔËÔØ»ð¼ýÒѳɹ¦µØ·¢ÉäÁË¡°ÉñÖÛ¡±ÏµÁÐÊÔÑé·É´¬£¬Ä³´ÎʵÑé¹ý³ÌÖУ¬Ò»¼à²âϵͳ²ÉÓÃÔÚͬһÕŵ×ƬÉ϶à´ÎÆعâµÄÕÕÏà·½·¨£¬´Ó»ð¼ýµã»ðʱ¿Ì¿ªÊ¼£¬Ã¿¸ô2.0sÆعâÒ»´Î£¬µÃµ½ÁËÒ»ÕżÇ¼»ð¼ýÔÚ¿ªÊ¼Ô˶¯µÄ×î³õ8sÄÚ5¸ö²»Í¬Î»ÖõÄÕÕƬ£¨ÈçͼËùʾ£©£¬ÒÑÖª»ð¼ýµÄ³¤¶ÈΪ57.5m£¬µ±µØÖØÁ¦¼ÓËÙ¶ÈΪ9.8m/s2£®Óÿ̶ȳ߲âÁ¿ÕÕƬÉϵÄÓйس¤¶È£¬½á¹ûÈçͼËùʾ£¬¸ù¾ÝÉÏÊöÌõ¼þºÍͼʾ£¬Çë»Ø´ð£º
£¨1£©»ð¼ýÔ˶¯8sʱµÄ¸ß¶È______m£®
£¨2£©»ð¼ýÔ˶¯6sʱµÄËٶȴóС______m/s£®
£¨3£©»ð¼ýÉÏÉýµÄ¼ÓËٶȴóС______m/s2£®
½â£º£¨1£©»ð¼ýÔÚ8sÄÚÉÏÉýµÄ¸ß¶Èh=£®
£¨2£©¸ù¾Ýij¶Îʱ¼äÄÚµÄƽ¾ùËٶȵÈÓÚÖмäʱ¿ÌµÄ˲ʱËٶȣ¬Ôò»ð¼ýÔ˶¯6sʱµÄËٶȴóСv=£®
£¨3£©¸ù¾Ý¡÷x=aT2µÃ£¬a=£®
¹Ê´ð°¸Îª£º£¨1£©300.0£¬50.0£¬6.25£®
·ÖÎö£ºÍ¨¹ý»ð¼ýµÄʵ¼Ê³¤¶ÈºÍͼƬÖеij¤¶È£¬¸ù¾Ý±ÈÀýµÄ·½·¨Çó³ö»ð¼ýÔÚ8sÄÚÉÏÉýµÄ¸ß¶È£®¸ù¾Ýij¶Îʱ¼äÄÚƽ¾ùËٶȵÈÓÚÖмäʱ¿ÌµÄ˲ʱËÙ¶ÈÇó³ö»ð¼ýÔÚ6sʱµÄËٶȣ¬¸ù¾ÝÁ¬ÐøÏàµÈʱ¼äÄÚµÄλÒÆÖ®²îÊÇÒ»ºãÁ¿Çó³ö¼ÓËٶȵĴóС£®
µãÆÀ£º½â¾ö±¾ÌâµÄ¹Ø¼üÕÆÎÕÔȱäËÙÖ±ÏßÔ˶¯µÄÔ˶¯Ñ§¹«Ê½ºÍÍÆÂÛ£¬²¢ÄÜÁé»îÔËÓã®
£¨2£©¸ù¾Ýij¶Îʱ¼äÄÚµÄƽ¾ùËٶȵÈÓÚÖмäʱ¿ÌµÄ˲ʱËٶȣ¬Ôò»ð¼ýÔ˶¯6sʱµÄËٶȴóСv=£®
£¨3£©¸ù¾Ý¡÷x=aT2µÃ£¬a=£®
¹Ê´ð°¸Îª£º£¨1£©300.0£¬50.0£¬6.25£®
·ÖÎö£ºÍ¨¹ý»ð¼ýµÄʵ¼Ê³¤¶ÈºÍͼƬÖеij¤¶È£¬¸ù¾Ý±ÈÀýµÄ·½·¨Çó³ö»ð¼ýÔÚ8sÄÚÉÏÉýµÄ¸ß¶È£®¸ù¾Ýij¶Îʱ¼äÄÚƽ¾ùËٶȵÈÓÚÖмäʱ¿ÌµÄ˲ʱËÙ¶ÈÇó³ö»ð¼ýÔÚ6sʱµÄËٶȣ¬¸ù¾ÝÁ¬ÐøÏàµÈʱ¼äÄÚµÄλÒÆÖ®²îÊÇÒ»ºãÁ¿Çó³ö¼ÓËٶȵĴóС£®
µãÆÀ£º½â¾ö±¾ÌâµÄ¹Ø¼üÕÆÎÕÔȱäËÙÖ±ÏßÔ˶¯µÄÔ˶¯Ñ§¹«Ê½ºÍÍÆÂÛ£¬²¢ÄÜÁé»îÔËÓã®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿