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July 28, 2014

Homework Help: physics

Posted by marie on Wednesday, January 4, 2012 at 2:50pm.

A 1.30 10
4
kg railroad car moving at 6.70
m/s to the north collides with and sticks to
another railroad car of the same mass that is
moving in the same direction at 1.83 m/s.
What is the velocity of the joined cars after
the collision?
Answer in units of m/

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