动物是如何应对失重的？

How do animals deal with lack of gravity?

youdao

这就是为什么在火箭和宇宙飞船里，失重的宇航员和物体会在空中漂浮。

They are in a condition of weightlessness. And this is why, in rockets and space capsules, weightless astronauts and objects float about in the air.

youdao

当飞机以抛物线飞行并暂时抵消部分重力时，学员将能体验到近似失重的状态。

Participants undergo near-weightlessness as the plane is flown in parabolic maneuvers that create temporary reduced gravity.

youdao

You can see that if a was equal to g, your downward acceleration is that of gravity, namely the cable has snapped in the elevator, Then you don't feel any weight.

你会发现如果 a 等于 g,你下降的加速度就是重力加速度,也就是电梯的绳索断了,那时你会完全失重

耶鲁公开课 - 基础物理课程节选