ÌâÄ¿ÄÚÈÝ

¡¾ÌâÄ¿¡¿ÈçͼËùʾ£¬Ò»ÖÊÁ¿ÎªmµÄÎïÌåÔÚÑØбÃæÏòÉϵĺãÁ¦F×÷ÓÃÏ£¬Óɾ²Ö¹´Óµ×¶ËÏòÉÏ×öÔȼÓËÙÖ±ÏßÔ˶¯£®ÈôбÃæ×ã¹»³¤£¬±íÃæ¹â»¬£¬Çã½ÇΪ¦È£®¾­Ê±¼ätºãÁ¦F×ö¹¦80J£¬´Ëºó³·È¥ºãÁ¦F£¬ÎïÌåÓÖ¾­Ê±¼ät»Øµ½³ö·¢µã£¬Çһص½³ö·¢µãʱµÄËٶȴóСΪv£¬ÈôÒÔµØÃæΪÖØÁ¦ÊÆÄܵÄÁãÊÆÄÜÃ棬ÔòÏÂÁÐ˵·¨ÖÐÕýÈ·µÄÊÇ£¨ £©

A£®ÎïÌå»Øµ½³ö·¢µãʱµÄ»úеÄÜÊÇ80 J

B£®ÔÚ³·È¥Á¦FÇ°µÄ˲¼ä£¬Á¦FµÄ¹¦ÂÊÊÇmgvsin¦È

C£®³·È¥Á¦FÇ°µÄÔ˶¯¹ý³ÌÖУ¬ÎïÌåµÄÖØÁ¦ÊÆÄÜÒ»Ö±ÔÚÔö¼Ó£¬³·È¥Á¦FºóµÄÔ˶¯¹ý³ÌÖÐÎïÌåµÄÖØÁ¦ÊÆÄÜÏÈÔö¼ÓÔÙ¼õÉÙ

D£®³·È¥Á¦FÇ°µÄÔ˶¯¹ý³ÌÖУ¬ÎïÌåµÄ¶¯ÄÜÒ»Ö±ÔÚÔö¼Ó£¬³·È¥Á¦FºóµÄÔ˶¯¹ý³ÌÖÐÎïÌåµÄ¶¯ÄÜÒ»Ö±ÔÚ¼õÉÙ

¡¾´ð°¸¡¿ABC

¡¾½âÎö¡¿

ÊÔÌâ·ÖÎö£º¸ù¾ÝÄÜÁ¿Êغ㣬³ýÁËÖØÁ¦Ö®ÍâµÄÁ¦¶ÔÎïÌå×ö¹¦Ê±£¬ÎïÌåµÄ»úеÄܾÍÒªÔö¼Ó£¬Ôö¼ÓµÄ»úеÄܵÈÓÚÍâÁ¦×÷¹¦µÄ´óС£¬ÓÉÓÚÀ­Á¦¶ÔÎïÌå×öµÄ¹¦Îª80J£¬ËùÒÔÎïÌåµÄ»úеÄÜÒªÔö¼Ó80J£¬³·È¥À­Á¦Ö®ºó£¬ÎïÌåµÄ»úеÄÜÊغ㣬ËùÒÔµ±»Øµ½³ö·¢µãʱ£¬ËùÓеÄÄÜÁ¿¶¼×ª»¯Îª¶¯ÄÜ£¬ËùÒÔ¶¯ÄÜΪ80J£¬ËùÒÔAÕýÈ·£®ÒòΪÎïÌå×öÔȼÓËÙÖ±ÏßÔ˶¯£¬³õËÙ¶ÈΪ0£¬ÓÉÅ£¶ÙµÚ¶þ¶¨Âɿɵã¬F-mgsin¦È=ma£¬ËùÒÔÎïÌåÉÏÉýʱµÄ·³ÌΪ S=at2£¬

³·È¥ºãÁ¦FºóÊÇÔȱäËÙÔ˶¯£¬ÇÒ¼ÓËÙ¶ÈΪgsin¦È£¬ËùÒÔ´Ó³·È¥À­Á¦µ½·µ»Øµ×¶ËµÄ¹ý³ÌÖУ¬-V=at-gsin¦Èt£¬

λÒÆΪ-S=att-gsin¦Èt2£¬³·È¥Á¦FÇ°µÄ˲¼ä£¬Á¦FµÄ¹¦ÂÊÊÇP=FV¡ä=Fat£¬ÓÉÒÔÉÏ·½³ÌÁªÁ¢¿ÉÒÔ½âµÃ P=mgvsin¦È£¬ËùÒÔBÕýÈ·£®ÔÚ³·È¥À­Á¦FÖ®ºó£¬ÓÉÓÚ¹ßÐÔµÄ×÷ÓÃÎïÌ廹ҪÉÏÉýÒ»¶Î¾àÀ룬ÎïÌåµÄÖØÁ¦ÊÆÄܼÌÐøÔö¼Ó£¬È»ºóÏ»¬£¬ÖØÁ¦ÊÆÄܼõС£¬ËùÒÔCÕýÈ·£®ÎïÌåÏòÉϼõËÙ¼õΪÁãÖ®ºó£¬ÒªÏòϼÓËÙÔ˶¯£¬ËùÒÔ³·È¥Á¦FºóµÄÔ˶¯¹ý³ÌÖÐÎïÌåµÄ¶¯ÄÜÊÇÏȼõСºóÔö¼Ó£¬ËùÒÔD´íÎó£®¹ÊÑ¡ABC£®

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

¡¾ÌâÄ¿¡¿ÔÚ¡°Ãè»æСµÆÅݵķü°²ÌØÐÔÇúÏß¡±µÄʵÑéÖУ¬Ðè²âÁ¿Ò»¸ö±êÓС°£¬ ¡±µÆÅÝÁ½¶ËµÄµçѹºÍͨ¹ýµÆÅݵĵçÁ÷£®ÏÖÓÐÈçÏÂÆ÷²Ä£º

Ö±Á÷µçÔ´£¨µç¶¯ÊÆ£¬ÄÚ×è²»¼Æ£© µçÁ÷±í£¨Á¿³Ì£¬ÄÚ×èÔ¼£©

µçÁ÷±í£¨Á¿³Ì£¬ÄÚ×èÔ¼£© µçѹ±í£¨Á¿³Ì£¬ÄÚ×èÔ¼£©

µçѹ±í£¨Á¿³Ì£¬ÄÚ×èÔ¼£©

»¬¶¯±ä×èÆ÷£¨×èÖµ£¬¶î¶¨µçÁ÷£©

»¬¶¯±ä×èÆ÷£¨×èÖµ£¬¶î¶¨µçÁ÷£©

£¨£©ÔÚ¸ÃʵÑéÖУ¬ÐèÒª¾¡¿ÉÄܾ«È·²âÁ¿£¬µçÁ÷±íӦѡÔñ__________£¨Ñ¡Ìî¡°¡±»ò¡°¡±£©£¬µçѹ±íӦѡÔñ__________£¨Ñ¡Ìî¡°¡±»ò¡°¡±£©£¬»¬¶¯±ä×èÆ÷ӦѡÔñ__________£¨Ñ¡Ìî¡°¡±»ò¡°¡±£©£®

£¨£©ÇëÔÚͼÖз½¿òÖÐÍê³ÉʵÑéµÄµç·ͼ£®

£¨£©¸ÃͬѧÕýÈ·Á¬½Óµç·ºó¼ì²éËùÓÐÔªÆ÷¼þ¶¼ÍêºÃ£¬½øÐвâÁ¿£®¸ù¾øËùÑ¡ÒÇÆ÷ºÍʵÑéµç·£¬ÊµÑéÖÐСµÆÅݵç×èµÄ²âÁ¿Öµ__________Õæʵֵ£¨Ìî¡°´óÓÚ¡±£¬¡°µÈÓÚ¡±»ò¡°Ð¡ÓÚ¡±£©£¬ÕâÖÖÎó²îÊôÓÚ__________£¨¡°ÏµÍ³Îó²î¡±»ò¡°Å¼È»Îó²î¡±£©£®

£¨£©ÏÂͼÊÇѧϰС×éÔÚʵÑéÖиù¾Ý²â³öµÄÊý¾Ý£¬ÔÚ·½¸ñÖ½ÉÏ×÷³ö¸ÃСµÆÅݵķü°²ÌØÐÔÇúÏߣ®Èô½«Á½¸ö¸ÃµÆÅݲ¢Áªºó£¬Ö±½Ó½ÓÔÚÌâÖÐÌṩµÄµçÔ´Á½¶Ë£¬Çë¹ÀËã¸ÃСµÆÅݵÄʵ¼Ê¹¦ÂÊ__________ £¨±£ÁôÁ½Î»ÓÐЧÊý×Ö£©£®£¨ÈôÐè×÷ͼ£¬¿ÉÖ±½Ó»­ÔÚͼÖУ©

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

¾«Ó¢¼Ò½ÌÍø