A hitman fires a bullet of mass 253.4 g at a speed of 15.6 m/s to the East. The pistol is of 613.2 g mass, ignoring air resistance, by how much velocity the pistol rebounds backwards? a. 0.01 m/s b. 2.42 m/s c. 6.45 m/s d. 6446.58 m/s

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