92. 2022年5月01日 15:56:15 : k9eJG1cDuQ : VnEzN3FTYU0vckk=[1]
Free fall (クリ)
A body is falling in free fall. On a plane, an observer is moving in a uniform linear motion. To him, the falling body draws a parabola. Every point of the body is accelerating.
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