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We start with Newton's Second Law, at first referring our problem to an inertial frame.
我们从牛顿第二定律出发,并且先只涉及惯性系。
The passengers are deluded into believing themselves to be in an inertial frame with no forces acting.
乘客误以为自己处于惯性系中,且不受外力作用。
And an inertial frame of reference would then be a frame in which there are no accelerations of any kind Is that possible?
惯性参考系也就是不存在任何,形式加速度的参考系,有可能吗?
So the Earth is an inertial frame of reference, if you go in a train relative to the Earth at constant velocity, you're also inertial.
所以,地球是一个惯性参考系,如果你坐在相对于地球匀速运动的火车里,你也处于惯性状态
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