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August 29, 2014

Homework Help: Physics

Posted by Priyanka on Friday, March 16, 2012 at 9:26pm.

In the railroad freight yard, an empty freight car of mass m rolls along a straight level track at 1.1 m/s and collides with an initially stationary, fully loaded boxcar of mass 4.3m. The two cars couple together upon collision.

(a) What is the speed of the two cars after the collision?

m/s


I believe it's m1(v1)+4.3(1.1)/m1+4.3 but i don't know what m1 and v1 would be?

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