How would I go about fading into an anchor?

What I want to achieve is, when I anchor a part, instead of it stopping immediately, I want its velocity to keep slowing down until it is not moving, and then anchor it. I want a sort of fading anchor effect. How do I achieve this?

There is two ways of doing this i can think of right now
1 lerp the speed to 0 then anchor
2 reduce speed by set value until all values are 0