Terminal velocity is an example of balanced forced because the gravitational forces and the air resistance balance each other.
When terminal velocity is reached, the gravitational force is balanced with the force of resistance.
Not balanced UNTIL it reaches terminal velocity.
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.
"Balanced" refers to forces, not to velocities or speeds. If an object is at terminal SPEED, the FORCES on it are balanced.
newton's first law states: an object will remain at rest or at a constant velocity unless the forces on it become unbalanced. As the forces on the object are now balanced it falls at a constant velocity. For falling objects this is called the terminal velocity
if its a velocity / time curve, it will show diminishing acceleration (slope of the curve) up to terminal velocity (forces balanced)
Terminal Velocity
That's exactly what we must conclude. If the forces on the car were not balanced, then its velocity would have to change.
In that case, the object is said to have achieved terminal speed.
When an object is falling, it accelerates, so it is speeding up. The faster it goes, the more air resistance there is on the object. Eventually, the force of the air resistance pushing up on the object will equal the force of gravity pushing down on the object. The forces on the object are balanced (they cancel out), so it will have no acceleration. This causes terminal velocity; the object is not speeding up anymore. When the forces on an object are balanced, it has no acceleration. This does not mean it has no velocity, it just means that the velocity is not changing (it does not speed up or slow down.)
When all forces are balanced, the object can either be moving at a constant velocity or be at rest. But because you asked for balanced forces on a moving object, it is moving at a constant velocity.