Final answer:
To calculate the average force required to accelerate the freight train car, the mass of the car is multiplied by the given acceleration, resulting in 3600 N, which is the correct answer to the question.
Step-by-step explanation:
The question asks to find the average force required to accelerate a freight train car that has a mass of 2000 kilograms and an acceleration of 1.8 m/s². This can be solved using Newton's second law of motion, which states that force equals mass times acceleration (F = m * a).
To solve for the force, we multiply the mass of the train car (2000 kg) by the given acceleration (1.8 m/s²):
Force = Mass × Acceleration
Force = 2000 kg × 1.8 m/s²
Force = 3600 N
Therefore, the average force behind the train car is 3600 newtons (N), which corresponds to option (A) 3600 N.