[kidd]

I would think the belt would be safer, as an open hand has more mass, where as a belt gives.

Kinetic energy is equal to 1/2 mv2, where m is the mass and v2 is the velocity squared.

Since velocity is squared and mass isn't, it is velocity that is of greater importance.

The whipping action of a belt, and the ability to follow through with a swing, results is a velocity that is greater than what the arm can provide in a spank. Furthermore, the kinetic energy is applied to a smaller area on a belt than with the hand.

[Resolute Conservative]

How about a pencil?

[FamiliarFace]

I’m glad someone could explain why the belt hurt more than dad’s hand.