To alleviate the traffic congestion between two cities such as Boston and Washington
Chapter 13, Problem 98(choose chapter or problem)
To alleviate the traffic congestion between two cities such as Boston and Washington, D.C., engineers have proposed building a rail tunnel along a chord line connecting the cities (Fig. 13-55). A train, unpropelled by any engine and starting from rest, would fall through the first half of the tunnel and then move up the second half.Assuming Earth is a uniform sphere and ignoring air drag and friction, find the city-to-city travel time. TrainFigure 13-55 98.
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