you sister= my pencils= our botks = your father= ma dog = 用合
you sister= my pencils= our botks = your father= ma dog = 用合
F合=ma,牛顿第二定律!
My older sister=My elder sister?
F合=ma什么意思
什么情况下F合=ma.什么情况下F-f=ma.合外力如何求
什么情况下F+F摩=ma,不是F合=ma吗?
在牛顿第二定律里,F合=ma中的F合怎样理解,例如以下题:
_____do you call your father's sister
Did your father make you the model?=Did your fat
You should { say sorry to your sister }就划线部分提问 括号=线
根据牛顿第二定律:F合=ma,结合物体的受力情况:F合=G′-Ff,得:
计算合外力时,为什么都是F-f=ma?用合外力计算时,为什么不算重力和支持力?.具体看下面题目