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Two balls with masses of 1.50 kg and 6.30 kg travel toward each other at speeds...

Two balls with masses of 1.50 kg and 6.30 kg travel toward each other at speeds of 13.0 m/s and 4.30 m/s, respectively. If the balls have a head-on inelastic collision and the 1.50-kilogram ball recoils with a speed of 8.60 m/s, how much kinetic energy is lost in the collision?

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