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Answer:v =4.36 m/sExplanation:given,mass of object A = 18.5 Kginitial velocity of object A = 8.15 m/s in eastmass of object B = 30.5 kginitial velocity of object B = 5 m/sP = 214. 45 N svelocity after collision is equal tov =4.36 m/shence,velocity after collision is equal to 4.36 m/s...