1. The problem statement, all variables and given/known data A train consisting of two cars pulled by a locomotive experiences an acceleration of 0.33m/s^2 [fwd]. Friction is negligible. Each car has a mass of 3.1 * 10^4 KG. a. ) Determine the force exerted by the first car on the second car. b. ) Determine the force exerted by the locomotive on the first car. 2. Relevant equations Applying newtons third law of motion which states: for every action force, there is a simultaneous force equal in magnitude, but opposite in direction 3. The attempt at a solution I drew a FBD of the situation and solved for part a) by simply applying newtons second law equation [ F= mA ] I solved for F and got 1.0 * 10^4 N. However I have trouble solving for part b.) The answer is supposed to be 2.0 * 10^4 N, but I can't get it. Would appreciate any help/advice! Many thanks in advance.