Water impact force on a body transitioning through mediums

[babbagero]

scenario - A free falling body impacts water at terminal velocity. During what time period is the body considered to be in impact. I am trying to calculate the impact force alone. Is the impact force considered at the initial contact, during the body is fully transitioning from one medium to the next (air to water) complete submertion.. or is the impact force considered over a time period from initial contact up to when ones body is descending due to a negative (neutral) bouyancy alone?? I know a lot of forces are involved.. air drag.. surface tension.. parasitic drag..turbulance.. bouyancy forces.. gravity. really what is the deffinition of the impact force in this scenario and how do I calculate it??

 

[LightHero]

The impact force in this scenario is the sum of all the forces acting on the body during the time period from initial contact until the body reaches terminal velocity, which is when the upward buoyancy forces equal the downward gravitational forces. This includes the forces of air drag, surface tension, parasitic drag, turbulence, and buoyancy. You can calculate the impact force by summing up all the individual forces and dividing this total by the time period from initial contact to terminal velocity.