The forces acting on the car are balanced. The forces acting on the car are in the same direction. The forces acting on the car are continuing to increase. The forces acting on the car are equal to the force of gravity.
I gave my students this multiple choice question: A car is traveling on a highway at a constant velocity. Which statement best describes the forces acting on the car?

Only one answer is correct among these 4 choices:
- The forces acting on the car are balanced.
- The forces acting on the car are in the same direction.
- The forces acting on the car are continuing to increase.
- The forces acting on the car are equal to the force of gravity.

Could you tell me which one is correct?

The forces acting on the car are balanced.