Final answer:
The force the tank applies to the car is 10,000 N due to Newton's third law of action-reaction, meaning for every action force there is an equal and opposite reaction force.
Step-by-step explanation:
According to Newton's third law of motion, for every action, there is an equal and opposite reaction. Thus, when a 48,000kg military tank collides with a 1,000kg car and the car exerts a force of 10,000 N on the tank, the tank exerts an equal force of 10,000 N on the car in the opposite direction. Therefore, the correct answer to the question is that the tank applies a force of 10,000 N on the car.