When a car is stationary, there are several forces acting on it:

* Weight (W): The weight of the car is the force of gravity pulling it down towards the ground. This force is equal to the mass of the car multiplied by the acceleration due to gravity (9.8 m/s²).

* Normal force (N): The normal force is the force exerted by the ground on the car, pushing it up and counteracting the weight of the car. This force is equal to the weight of the car.

* Friction (F): Friction is the force that opposes the motion of the car when it is in contact with the ground. This force is caused by the interaction between the tires of the car and the road surface. The amount of friction depends on the type of surface and the weight of the car.

* Air resistance (D): Air resistance is the force that opposes the motion of the car when it is moving through the air. This force is caused by the interaction between the car and the air molecules. The amount of air resistance depends on the speed of the car and the shape of the car.

When the car is stationary, the forces of weight, normal force, and friction are all balanced. This means that there is no net force acting on the car, so it does not move. However, if the car is not stationary, these forces will be unbalanced and the car will accelerate.