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# Kinetic Energy in an Elastic Collision

CLMECH-CQNOJX

A 5.6-kg object has a velocity of 1.6 m/s due north. A 9.4-kg object has a velocity of 1.2 m/s in the direction $30^o$ east of north. The two objects collide elastically. What is the final total kinetic energy of the system?