Move Softbody to position

[Cysar]

What you wrote is a regular spring: Force = -kx (where K is the "speed" constant, and x the distance between the red ball and the softbody).

You could add a dampening factor to control and reduce oscillation. See:
https://phys.libretexts.org/Bookshelves/...cillations

I do not understand that , so I just googled "unity velocity Damped Oscillations" and I found this (A simple follow script using damped harmonic motion : Unity3D (reddit.com)) 
The problem is this is working when I use rigidbody.velocity = velocity but its not wokring when I try to use rigidbody.AddForce(velocity) is it possible to use something like ObiActor.velocity instead of ObiActor.AddForce() ?