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Coupling of train cars is a regular feature at railway yards. Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 1.50×105kg and a speed of v₁,i = 0.30m/s, and the second having a mass of

Coupling of train cars is a regular feature at railway yards. Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 1.50×105kg and a speed of v₁,i = 0.30m/s, and the second having a mass of

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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Coupling of train cars is a regular feature at railway yards. Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 1.50×105kg and a speed of V₁,i = 0.30m/s, and the second having a mass of 1.10×105kg and a speed of V2,i = 0.12m/s. Assume that the friction between the train tracks and the train cars is negligible. V₁,1 OX V2.i LOX OK A 1. Consider our system to be the two train cars. Is linear momentum of the two-car system the same before and after the collision? Explain why? 2. What type of collision is this? Is kinetic energy of the two-car system the same before and after the collision? Explain why? 3. Solve for the final velocity of the two coupled trains symbolically. 4. Calculate the final velocity of the two coupled trains using the numerical values provided. If we consider our system to be a single car, is the momentum of a single car system the same before and after the collision? Why?
Transcribed Image Text:Coupling of train cars is a regular feature at railway yards. Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 1.50×105kg and a speed of V₁,i = 0.30m/s, and the second having a mass of 1.10×105kg and a speed of V2,i = 0.12m/s. Assume that the friction between the train tracks and the train cars is negligible. V₁,1 OX V2.i LOX OK A 1. Consider our system to be the two train cars. Is linear momentum of the two-car system the same before and after the collision? Explain why? 2. What type of collision is this? Is kinetic energy of the two-car system the same before and after the collision? Explain why? 3. Solve for the final velocity of the two coupled trains symbolically. 4. Calculate the final velocity of the two coupled trains using the numerical values provided. If we consider our system to be a single car, is the momentum of a single car system the same before and after the collision? Why?
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