A railroad freight car rolls on a track at 2.75 m/s toward two identical coupled freight cars, which are rolling in the same direction as the first, but at a speed of 1.20 m/s. The first reaches the second two and all couple together. The mass of each is 3.40 ✕ 104 kg.(a)What is the speed (in m/s) of the three coupled cars after the first couples with the other two? (Round your answer to at least two decimal places.) m/s(b)Find the (absolute value of the) amount of kinetic energy (in J) converted to other forms during the collision. J

Name: A railroad freight car rolls on a track at 2.75 m/s toward two identic
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Description: A railroad freight car rolls on a track at 2.75 m/s toward two identical coupled freight cars, which are rolling in the same direction as the first, but at a speed of 1.20 m/s. The first reaches the second two and all couple together. The mass of eac

velocity of one car, u = 2.75 m/s velocity of two cars, u'= 1.2 m/s mass of each car, m = 3.4 x…

Answered: A railroad freight car rolls on a track…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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A railroad freight car rolls on a track at 2.75 m/s toward two identical coupled freight cars, which are rolling in the same direction as the first, but at a speed of 1.20 m/s. The first reaches the second two and all couple together. The mass of each is 3.40 ✕ 10⁴ kg.

(a)

What is the speed (in m/s) of the three coupled cars after the first couples with the other two? (Round your answer to at least two decimal places.)

m/s

(b)

Find the (absolute value of the) amount of kinetic energy (in J) converted to other forms during the collision.

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