A train (an engine and four cars) is accelerating at 1.60 m/s^2 . The mass of each car is 3.60 x 10^4 kg, and each car has negligible frictional forces acting on it.
Part A: What is the force of the engine on the first car?
Part B: What is the force of the first car on the second car?
Part C: What is the force of the second car on the third car?
Part D: And what is the force of the third car on the fourth car?