The train cars moves in the same direction when the engine car begins
moving to the left.
The law of magnetism states that like poles repel and unlike poles attract.
In substances which have magnetic field, they are known to attract each
other.
The engine and train car are highly magnetized which results in them
moving in the same direction when they are in close contact with one
another.
Read more about Magnetism here https://brainly.com/question/12529206