calculate time required if timescale is changed

when i apply force on a ball(rigid body) using timescale = 1, it takes 3.5 sec to come to rest. Now if I apply timescale =0.1; How to calculate the time to be taken by the ball to come to rest. I know the force applied and time it take to come to rest (if time scale is 1) . Now I want the time ball will take to stop when time scale is 0.1;

Any links or ideas on this?