Women in general are not mentally equipped to cope with modern technology.
Perhaps you Mum is terrified of being electrocuted by things she does not understand.
It could help if you educate her.
The Potential Energy possessed by the objects by virtue of their height (Energy was expended in getting them up there) is transformed into Kinetic Energy on the way down.
PE = mgh and KE = 0.5 mv^2
Notice carefully that the mass (m) appears on both sides of the equation.
It can...