Two balls are moving in different directions and at one point they collide and stick. the mass of the first ball is 10kg and its velocity v = (- 4j-3k) m / s, the second ball has a mass of 20 kg and its velocity V2 = (- 3i-4j + 12k) m / s. what is the kinetic energy lost in this collision? A) 999.3 J B) 806.7 J C) 486.6 J D) 806.7 J E) 780.0 J

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