F4 physics(net force)問題~~就快quiz,幫幫忙~~ .
2006-11-01 4:07 am
我唔明點解net force系0都仲可以用constant speed move.如果一樣物件向前同向後ge力都一樣,點解仲有force推得move佢??
回答 (1)
2006-11-02 5:43 am
✔ 最佳答案
According to Newton s First Law of motion, a body will remain at rest or travel in uniform velocity unless it is acted by a net force.Since the net force is 0 in your question, the body can still move at a constant speed.
Net Force = Applied force on the object - Friction/resistance
If the applied force = resistance, the net force = 0
Therefore the body can still move at a constant speed.
收錄日期: 2021-04-13 14:45:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061031000051KK03852