1. In a railroad yard, a train is being assembled. An empty boxcar, coasting at 3...

    

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1. In a railroad yard, a train is being assembled. An empty boxcar, coasting at 3 m/s along a frictionless track, strikes a loaded car that is stationary, and the cars couple together. Each of the boxcars has a mass of 9000 kg when empty, and the loaded car contains 55,000 kg of lumber. V₁=3 V₂=0 BEFORE AFTER CO COOO m₁=9000 m₂=64000 000000 00 m₁+m₂=73000 a. Write the momentum conservation equation for this system in terms of variables (m,v). b. Find the speed of the coupled boxcars. 1. In a railroad yard, a train is being assembled. An empty boxcar, coasting at 3 m/s along a frictionless track, strikes a loaded car that is stationary, and the cars couple together. Each of the boxcars has a mass of 9000 kg when empty, and the loaded car contains 55,000 kg of lumber. V₁=3 V₂=0 BEFORE AFTER CO COOO m₁=9000 m₂=64000 000000 00 m₁+m₂=73000 a. Write the momentum conservation equation for this system in terms of variables (m,v). b. Find the speed of the coupled boxcars.

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Solution How to find the fina... View the full answer