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…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter11: Collisions

Section: Chapter Questions

Problem 41PQ: Initially, ball 1 rests on an incline of height h, and ball 2 rests on an incline of height h/2 as...

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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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