A collision is a physical event in which two or more objects come into contact with each other with significant force. This can result in a change in the objects' motion or shape.
Collisions in water involve resistance from the surrounding fluid, which can slow down or alter the motion of the objects involved. In contrast, collisions in air typically have less resistance and result in a quicker rebound of the objects.
Splashing is caused by the transfer of momentum from the colliding objects to the surrounding water. This creates waves and ripples on the surface of the water, resulting in the splashing effect.
The density of the objects involved in a collision can greatly impact the resulting phenomena. Objects with higher densities will experience more resistance and a slower rebound, while objects with lower densities will experience less resistance and a quicker rebound.
Buoyancy is the upward force exerted by a fluid on an object that is partially or fully submerged in it. In collisions in water, buoyancy can affect the motion and outcome of the collision, as the density and shape of the objects involved will determine the amount of buoyant force they experience.