http://i180.photobucket.com/albums/x75/peterlau0_0/physics.jpg
(a) 答案係35200N同32500N
如何計??
thx
收錄日期: 2021-04-13 17:39:14
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070615000051KK03660