Balanced forces act at a constant speed. A resultant force is a single force that has the same action as two or more forces acting on an object.
Objects accelerate in the same direction as a resultant force. If the object is already moving the opposite way it will slow down.
The forces act on two different objects. Each object exerts an equal and opposite force on the other object.
Acceleration and mass are inversely proportional - as mass doubles, acceleration halves.
Alcohol affects the driver, which means that it would increase the thinking distance rather than braking distance. Icy roads would increase braking distance.
