# Does an object's kinetic energy increase, decrease, or stay constant when it reaches terminal velocity while falling?

Does an object's kinetic energy increase, decrease, or stay constant when it reaches terminal velocity while falling?

• after reaching the terminal velocity $v_f$, the velocity does not change after that, so $E_k=1/2 m v_f^2$ staying constant. if this is what you mean. Jun 24 '14 at 2:02
• Assuming your mass is non-changing this question is equivalent to "Does an object's speed increase, decrease, or stay constant when it reaches terminal velocity while falling". When you go from non-terminal velocity to terminal velocity, it increases. When you stay at non-terminal velocity, it's constant. (assuming constant terminal velocity) Jun 24 '14 at 13:01
• Understanding the feeling of this: It takes energy to push through the air. Terminal velocity is the velocity where all the energy gained from falling is spent pushing through the air resulting in no net gain.
– Phil
Jun 24 '14 at 16:43