Question: You are at a train station, standing next to the train at the front of the first car. The train starts moving with constant acceleration,

You are at a train station, standing next to the train at the front of the first car. The train starts moving with constant acceleration, and 5.0 s later the back of the first car passes you. How long does it take after the train starts moving until the back of the seventh car passes you? All cars are the same length?

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