Final answer:
The car with a mass of 1200 kg and accelerating at 3 m/s² is experiencing a net force of 3600 newtons.
Step-by-step explanation:
The question is asking for the net force experienced by a car during acceleration. To find this, we can use Newton's second law of motion, which states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration (F = m x a).
In this case, the mass of the car (m) is 1200 kg, and the acceleration (a) is 3 m/s². Using the formula F = m x a, we can calculate the net force as follows:
F = 1200 kg x 3 m/s² = 3600 N
Therefore, the car is experiencing a net force of 3600 newtons during its acceleration.