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Home Q & A Board Science-Related Homework Help Physics
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Northa Northa
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7 years ago
A railroad car of mass m and speed v collides and sticks to an identical railroad car that is initially at rest. After the collision, the kinetic energy of the system
A) is the same as before.
B) is half as much as before.
C) is one third as much as before.
D) is one fourth as much as before.
E) is one quarter as much as before.
Textbook 
Physics

Physics


Edition: 4th
Author:
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Raj.SRaj.S
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7 years ago
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Northa Author
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#2
7 years ago
This helps so much. I'll try to figure out the rest on my own now
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