Filbert2

For all the f=mv2 discussions, note that the velocity squared term in the force equation means that any increase in velocity will have a much grater effect on force than an increase in mass of the same size. Thus for the titanium hammer, the loss in mass is overcome by the potential increase in velocity using this hammer. Also, the elasticity of titanium is much lower than that of steel giving a higher transfer of energy to whatever (or whoever) you are beating on! It looks like a great tool.