Question a train departs at 120000 noon your watch shows, Ask an Expert

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Question: A train departs at 12:00:00 noon. Your watch shows 12:00:00 noon when the last but one passenger car just started passing in front of you. It has passed by you in 10 seconds and the last passenger car passed by you in 8 seconds. The train moved with a constant acceleration.

Part A: How much behind is your watch?

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