Terminal Velocity
That is the object's terminal velocity.
... I think you want to know about forces. At terminal velocity, the force of gravity is balanced by the air resistance, so no further acceleration occurs (balanced forces are the equivalent of an absence of force), which is why we call it *terminal* ("end value") velocity.
When terminal velocity is reached, the gravitational force is balanced with the force of resistance.
Air Resistance is a force.
-- When the forces on an objerct are 'balanced' ... meaning they add up to zero ...the object moves with a constant speed in a straight line.-- When the object's weight is greater than the force of air resistance, it keepsaccelerating downward.-- When the force of air resistance is equal to the object's weight, the forces on itare balanced, they add up to zero, and the object's speed becomes constant.-- If you started by throwing the object down at a high speed, so that the force ofair resistance was greater than its weight, its speed would decrease to the pointwhere the force of air resistance was equal to its weight. At that point, the forceson it would be balanced, they would add up to zerro, and its speed would becomeconstant.
Air resistance is a contact force because you are in contact with the air in order to apply that force.
terminal velocity
If its speed of fall is no longer changing, then its acceleration is zero. That tells you that the forces on it must be balanced, so the upward force of air resistance must be exactly equal to the downward force of gravity.
air pressure is when air gets pressed down
"Free fall" means that gravity is the only force acting on a body.
Yes resistance would be a push force.