A 2.0-kg object moving with a velocity of 5.0 m/s in the positive x direction strikes and sticks to a 3.0-kg object moving with a speed of 2.0 m/s in the same direction. How much kinetic energy is lost in this collision?
A. 2.4 J
B. 9.6 J
C. 5.4 J
D. 0.6 J
E. 6.0 J
Answer: C
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