Homework Help: physics

Posted by Anonymous on Sunday, March 7, 2010 at 2:57pm.

A 9600 kg boxcar traveling at 15 m/s strikes a stationary second car. The two stick together and move off with a speed of 7.0 m/s. What is the mass of the second car?

physics - drwls, Sunday, March 7, 2010 at 3:14pm
Whatever the law of conservation of momentum says it is.

Try applying it.

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