At some point,maybe you’ll see in her eyes that she’s wondering why thisso-cool guy is even talking to her, or your C+F busting is startingto hurt.

某些点上，也许你会看到那些女孩眼里的疑惑：为什么这么酷的男孩会主动找自己交谈。

youdao

y This is not compatible with a constraint, but we don't care. So, that's the guy that we compute just from the formula for f ignoring the constraints.

z恒定，先不管限制条件。，Y，and，z，are，held，constant。，And，，we，forget，the，constraint。,它和限制条件是不相容的，先不管，那这些就是,忽略限制条件时，由公式计算而得的结果。

youdao

Newton says F = ma, so to make it a useful result of this problem, we know the mass of this guy.

牛顿指出 F = ma,这对于解决这个问题很有用,我们知道这个物体的质量

耶鲁公开课 - 基础物理课程节选

For this guy, F = ma will be 10 - f = 3a.

对这个物体,F = ma 就是 10 - f = 3a

耶鲁公开课 - 基础物理课程节选

The only force acting on this guy is this little f.

这个物体只受一个力的作用,也就是 f

耶鲁公开课 - 基础物理课程节选

Moghadam and CEO Private Capital Guy F.

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