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An English mastiff with a mass of 155kg, jumps forward horizontally at a speed of 6.0m/s into a boat that is floating at rest. After

An English mastiff with a mass of 155kg, jumps forward horizontally at a speed of 6.0m/s into a boat that is floating at rest. After the jump, the boat and Zorba move with a velocity of 2.2m/s forward. Calculate the boat mass.

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