假設A is moving 10ms^-1 to the right, B is moving 10ms^-1 to the left
A 和 B 相撞,
A exerts 衝擊力F1 on B, A receives a reaction force F2 by B
And B exerts 衝擊力 F3 on A, B receives a reaction force F4
是否
the net force on A 不只是reaction force F2, 還有 B 的衝擊力F3
所以 net force acting on A = F2+F3
而 that acting on B= F1+F4
對嗎?? THX
Third law Thx
2008-01-23 1:13 am
回答 (1)
2008-01-23 3:46 am
✔ 最佳答案
yes, you are right but in this question, it would be better for you to indicate the direction of the net force too
so let direction towards right is positive
so the net force acting on A = -F2 + (-F3) = -F2 - F3
and the net force acting on B = F1 + F4
收錄日期: 2021-04-23 17:38:24
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080122000051KK05348