1. Understand the Forces

* Gravitational Force (Fg): This is the force pulling the object downwards due to gravity. It's calculated as Fg = m * g, where 'm' is the mass of the object (1 kg) and 'g' is the acceleration due to gravity (approximately 9.8 m/s²).

* Air Resistance (Fa): This is the force pushing upwards against the object, opposing its motion. You've given this force as 'N' (Newtons).

2. Calculate the Net Force

The net force (Fnet) acting on the object is the difference between the gravitational force and air resistance:

Fnet = Fg - Fa

* Fnet = (1 kg * 9.8 m/s²) - N

3. Apply Newton's Second Law

Newton's Second Law of Motion states that the net force acting on an object is equal to its mass times its acceleration:

Fnet = m * a

4. Solve for Acceleration

* a = Fnet / m

* a = [(1 kg * 9.8 m/s²) - N] / 1 kg

5. Result

The acceleration of the object is:

* a = (9.8 - N) m/s²

Important Note: To get a numerical answer for the acceleration, you need to know the specific value of the air resistance force (N).