(数学)求a和c列式please?
回答 (1)
2015-12-28 3:05 pm
✔ 最佳答案
(a) 20×3−5×3²=15(m)(b) h=ut−5t²
→ut=h+5t²
→u=h/t+5t
(c) 40/2+5×2=30(m/s)
收錄日期: 2021-05-03 13:47:45
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151228044250AAHXcYQ