A locomotive is pulling three wagons along a level track with a force of 100,000 N.
The wagon next to the locomotive has a mass of 70,000 kg, the next one, 50,000 kg, and the last one, 80,000 kg. Neglect friction. What is the force between the 80,000-kg and 50,000-kg wagons?
40,000 N
35,000 N
50,000 N
60,000 N
65,000 N