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## Homework Statement

A train consists of of 50 cars, each of which has a mass of 6800 kg. The train's acceleration = 0.08 m/s(squared). Ignore friction and determine the tension in the coupling (a) between the 30th and 31st cars and (b) between the 49th and 50th cars.

## Homework Equations

Net Force = Tension = mass * acceleration

## The Attempt at a Solution

Used the equation above I came to:

16320 N for part (a) and

26656 N for part (b).

My problem is, I'm thinking those answers are supposed to be divided by some amount since there are couplings between each car.