Homework Help: Physics

Posted by Angel on Sunday, January 22, 2012 at 5:34pm.

A 1.46 × 10
4
kg railroad car moving at 7.05
m/s to the north collides with and sticks toanother railroad car of the same mass that is
moving in the same direction at 1.76 m/s.
What is the velocity of the joined cars after
the collision?
Answer in units of m/s

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