a locomotive pulls 10 identical freight cars. the force between the locomotive and the first car is 100,000 Newtons, and the acceleration of the train is 2m/s^2. there is no friction to consider.what is the force between the ninth and tenth cars?

Answer 1

F = m a

100,000 = m of ten * 2
m of ten = 50,000 kg
so
m of one = 5,000 kg

F = m a = 5,000 * 2 = 10,000 Newtons