Terminal velocity is the maximum velocity of an object when it is thrown in water or air.
Drag force in air or water balances the gravitational force and it gives a constant and a maximum velocity which is called as a terminal velocity.
since the net force on the body is zero then the accelaration of the body is also zero.
i hope you get it.

Acceleration Due to Gravity of a Ball Before Falling with Terminal Velocity

The acceleration due to gravity of a ball or sphere before falling with terminal velocity is a constant value, typically denoted as "g." This value represents the acceleration experienced by the object due to the gravitational force exerted by the Earth.

Explanation

- Definition of Acceleration Due to Gravity: Acceleration due to gravity is the acceleration experienced by an object in free fall near the surface of the Earth. It is approximately 9.81 m/s^2.

- Initial Stage: When a ball or sphere is dropped from a certain height, it initially accelerates at a rate equal to the acceleration due to gravity, which is 9.81 m/s^2.

- Factors Affecting Acceleration: The acceleration due to gravity remains constant until the ball reaches its terminal velocity. Factors such as air resistance, mass, and surface area affect how quickly the ball reaches terminal velocity.

- Terminal Velocity: Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium through which it is falling prevents further acceleration.

- Relationship with Terminal Velocity: Before the ball reaches terminal velocity, it accelerates at a rate of 9.81 m/s^2. Once the ball reaches terminal velocity, the acceleration due to gravity is counteracted by the air resistance, and the ball falls at a constant speed.

In conclusion, the acceleration due to gravity of a ball or sphere before falling with terminal velocity is a constant value of 9.81 m/s^2. This value plays a significant role in determining the motion of the object as it falls towards the Earth.