# Is it momentum/force or pressure that determines the damage of an impact?

So a tiny object and a huge object that have the same mass and velocity strike a surface. Because they have the same mass and velocity, they would have the same momentum and will deliver the same amount of force upon impact. I would intuitively expect that the tiny object would do far more damage than the large object, so I'm guessing damage is determined by pressure (which is partly determined by force and therefor is connected to momentum i.e. increase the momentum in an object, increase the pressure it exerts, assuming it covers the same area).

I'm not 100% confident that I'm correct though, partly because I always hear people talk about impact in the context of force and momentum (the force * the period time it is exerted over) alone, not taking the area that the force is exerted over into account. Is this just them making assumptions that an object with a high mas will be very large or does the area not matter as much as I think it does?