Homework Help: physics

Posted by Elisabeth on Tuesday, September 20, 2011 at 10:34pm.

A 10 kg cart was observed moving north with a speed of 15 m/s before it collided with an identical cart moving south at 10 m/s. The collision was observed to cause the carts to couple and move together as one. What is in kg m/s the combined momentum of both carts before the collision?

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