Determine what is the speed of the five-car train

Reference no: EM13668037

Three equal train cars, coupled together, are rolling east at 2.0 m/s. A fourth car traveling east at 4.0 m/s catches up with the three and couples to make a four-car train. A moment later, the train cars hit a fifth car that was at rest on the tracks, and it couples to make a five-car train. Determine the speed of the five-car train?

Reference no: EM13668037

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