I've been having a bit of a discussion with a friend lately, about an object dropping off a horizontal surface, falling a certain amount, and then landing on another horizontal surface. The question is whether the impact of landing on the horizontal surface, will be affected by the velocity of the object. It started about flat-landing drops on a skateboard. Do you land as hard going fast as you do going slow? The size of drop would be between in the range of 4-10 feet. From my understanding, the velocity will make no difference, as an object is always affected by gravity in the same way, ie accelerating downward vertically at 9.8m/s. The horizontal velocity would not factor in, as when you land you would continue moving at the same velocity as take-off due to newtons law, thus there is no force dissipated here. Sorry, my ability to explain physics is quite limited! Could there be anything that I am not taking into account? I am assuming air resistance, would be negligible at these speeds. Is this correct? Any clarification and explanation of this matter would be highly welcomed.