As I start to accelerate, the force of air resistance starts to increase. My speed is increasing, but my acceleration (changing speed) is slowing.
E. I am going sky diving! I jump from the aircraft. My parachute is closed and there is no air resistance acting vertically! You can say I am in Free Fall at the moment.
G. As I fall faster, the air resistance increased even more. My acceleration is decreasing to zero.
D. Force of gravity equals the force of air resistance. There is no resultant force acting on me, and I am not accelerating anymore. I am traveling at a constant speed now.
H. I open my parachute after a few minutes. The force of air resistance shoots up, but the force of gravity stays the same! I start to decelerate rapidly.
F. As I slow down, the force of air resistance decreases on me. My speed is not decreasing so rapidly anymore.
C. My force of air resistance now equals the force of gravity. I am falling with a constant speed - so I have reached TERMINAL VELOCITY
B. I am still falling at a constant, slow steady speed, enjoying the views. Soon, I will be on the ground!
