Describe how the size of the starting force affects the distance moved by the car.

There are two forces acting in opposition to the driving force, so  the friction and the road and the air resistance. The air resistance is much greater than the friction with the road when a vehicle is in motion. When a vehicle is at rest, all of the forces acting on it are balanced.

it is a negative acceleration

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.