v gR or equal than gR, so I have here v squared, h-y which is 2g times h minus y.

的平方肯定大于，So，v，squared，must，be，larger,或等于，所以v的平方，也就是2g乘以。

youdao

v gR or equal than gR, so I have here v squared, h-y which is 2g times h minus y.

的平方肯定大于，So，v，squared，must，be，larger,或等于，所以v的平方，也就是2g乘以。

youdao