Overhand punch vs Hook in Boxing: What punch generates more power?

 

Punch force is determined by the Impulse-Momentum connection, according to basic physics (the change in momentum experienced by a body under the action of a force is equal to the impulse of the resultant force).

You'll produce a greater impact on your target if you have more mass (weight) and can move that mass rapidly (momentum).  That's why it comes as no surprise that heavyweights hit the hardest!

Let's take a look at this in further detail.