Terminal Velocity

Free fall is when an object is falling with no driving force (other than gravity) acting on it. A free-falling object in a fluid (e.g. air) will eventually reach terminal velocity. 

When free-falling objects first set off they have much more force accelerating them than resistance slowing them down. As the velocity increases the resistance builds up. This gradually reduces the acceleration force and then it wont be able to accelerate any more. It will have reached its mximum velocity or terminal velocity.

The Terminal Velocity of objects depends on their shape and area

The accelerating force acting on all falling objects is…