A 105kg man sits on the Stern of a 5.8 m long boat the prow of the boat touches the pier but the boat isn't tied. the man notices his mistake stands up and walks to the boat's prow, but the time he reaches the prow it's moved 2.09 M away from the pier. assuming no water resistance to the boat's motion calculate the boats mass(not counting the man) Answer in units of kg.

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A: NOTE: As you have requested only answers without any explanation

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Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.