1. force that moves a car forward is the friction force between the tires and the road (ignoring what is going on mechanically in the car) 2. if the car is travelling at constant velocity, net force is zero - forces pushing car forward are equal to forces pushing car back
Force of Inertia
The road is the horizontal force on the car. The tires push on the road which is the action and the road pushes forward on the tires which is the reaction.
Like all engines the fuel makes energy which makes torqe then that pushes the car forward
Yes, but not nesicarially equally. "In every interaction, forces always occur in pairs. For example, in walking across the floor you push against the floor, and floor pushes against you. Likewise, the tires of a car push against the road, and the road in turn pushes back in the tires. In swimming you push the water backward, and the water pushes you forward. There is a pair of forces acting in each instance. The forces in these examples depend on friction; a person or a car on ice, by contrast, may not be able to exert the action force against the ice to produce the needed reaction force." -Conceptual Physics by Paul G. Hewitt
Yes. Gravity pulls it down; the road, or any surface the car is resting on, pushes it up.
Frictional Force
There are two kinds of pushes. When a driver says "My car pushes," then it is resisting turning. Then there is the physical act of one car pushing another forward to speed them both up.
When we walk on the ground our foot pushes the ground backward, and in return, the ground pushes our foot forward. The forward reaction exerted by the ground pushes our foot forward. The forward reaction exerted by the ground on our foot makes us walk forward.
To demonstrate Newton's third law, take a battery operated toy car, and place it on a piece of paper on the desktop. When the car pushes back the piece of paper back while the paper pushes the car forward. You can also demonstrate this in swimming pool. Stand on a floating mat, take a couple of steps. You will be pushing back onthe mat, while the mat pushes forward on you.
The person's feet push backward on the sidewalk; the sidewalk pushes forward on the person.
The person's feet push backward on the sidewalk; the sidewalk pushes forward on the person.