Final answer:
The question involves concepts such as blood spatter analysis, projectile motion, impact forces, and fluid dynamics, all of which fall within the discipline of physics. Blood spatter on different surfaces and the rate of fall in projectile motion are not affected by initial horizontal velocity or the surface's absorption properties.
Step-by-step explanation:
The question seems to refer to the behavior of liquids and objects under the influence of physics laws. When discussing blood spatter on different surfaces, it's important to consider the properties of those surfaces. A hard, non-porous surface doesn't absorb the liquid, so a droplet will leave a well-defined spatter, rather than being absorbed as it would be on a porous surface like fabric or sponge. The velocity and resulting spread pattern will be different due to this absorption characteristic of the surface.
With regard to projectile motion and freefall, physics principles state that any object in projectile motion indeed falls at the same rate as an object in freefall, regardless of its horizontal velocity. This can be observed when an object is launched horizontally; its vertical fall rate is consistent with gravity's pull, unaffected by any horizontal motion. This is a demonstration of Galilean invariance, which states that the laws of motion are the same in all inertial frames.