Assuming that the diameter of the rope is 0.5cm, it is necessary to ensure that the rope passes through the foot and the height of the human body is at least 0.5cm. Therefore, the jumping time is 2 squrt (2 h/g) = 0.63 s. 。

So the limit of one minute is 60/0.063=952 times. This is the absolute limit, and no matter how strong the ability is, it cannot be surpassed. ...