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23 Nov 2019

A 10000 kg boxcar traveling at 18 m/s strikes a second boxcar atrest. The two stick together and move off with a speed of 10 m/s.What is the mass of the second car?
kg

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Nestor Rutherford
Nestor RutherfordLv2
14 Feb 2019

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

A prisoner escapee (mass M1) got himself trapped in a lightframed closed train boxcar (mass M2) of length L. He recalls thatshooting his toy pistol may get the boxcar to start rolling downthe horizontal tracks (we neglect all forms of friction anddrag)

A) Explain Conceptually, using Newtons 2nd Law, why the boxcarwill move

B) Using conservation principles, calculate algebraically thespeed of the boxcar after the bullet (mass m) is fired with amuzzle speed vb. Calculate that speed forM1=60kg, M2=1000kg , m=50kg,vb=100 m/s , L=10m

C) Calculate by how much the boxcar moves with respect to thetrack during the flight of the bullet form one end of the boxcar tothe other end.

D) Assume the center of mass of the boxcar+man is in the middleof the car. Show that the position of the combined center of massof the bullet and the boxcar+man does not move with respect to thetracks as the bullet travels.

E) The bullet eventually embeds itself in a block of wood alongthe far wall of the boxcar. Explain what happends to the boxcar.Evaluate his chances of escape.

A prison escapee (mass M1) gothimself trapped in a light-framed closed train boxcar (mass M2) oflength L. Having mastered physics he recalls that shooting his toypistol may get the boxcar to start rolling down the horizontaltracks (neglecting all forms of friction and drag)

a.)Using conservative principles, calculate algebraically thespeed of the boxcar after the bullet (mass m) is fired with amuzzle speed v. Calculate the speed for M1=60kg, M2=1000kg, m=50g,v=100m/s, L=10m

b.)calculate by how much the boxcar moves with respect to thetrack during the flight of the bullet from one end of the boxcar tothe other end

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In the railroad freight yard, an empty freight car of mass m rollsalong a straight level track at 1.0 m/s and collides with aninitially stationary, fully loaded boxcar of mass 4.2m. The twocars couple together upon collision.
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m/s

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