C at this point c, this has reached a maximum velocity that it can ever have because all the potential energy has been converted to kinetic energy.

在这个点，达到它能达到的，最大动能，因为所有的势能，都转化成了动能。

youdao

C at this point c, this has reached a maximum velocity that it can ever have because all the potential energy has been converted to kinetic energy.

在这个点，达到它能达到的，最大动能，因为所有的势能，都转化成了动能。

youdao