The net force on a car traveling at a constant speed in a straight line is zero. In which of these would be the net force remain zero. A) the car speeds up to pass a big truck. B) the car gets a flat

The net force on a car traveling at a constant speed in a straight line is zero. In which of these would be the net force remain zero. A) the car speeds up to pass a big truck. B) the car gets a flat tire and slows down. C) In an instant the car comes to a complete stop D) the driver swerves around a piece of iron on the road