國三理化牛頓運動定律的題目求解 請附上算式或解釋，感謝不盡 題目在網址中?
回答 (1)
2015-10-08 10:12 pm
✔ 最佳答案
1. 50*9.8 = 490 N = (B)2. 50 + 50*4.9/9.8 = 50 + 25 = 75 kg = (C)
3. 50 - 25 = 25 kg = (A)
4. 75 kg = (A)
5. a = 0; 50 kg = (B)
收錄日期: 2021-04-30 20:12:25
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20151008043915AAapPHy