A 100 kg man sits on the stem of a 3.6 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 boats prow, but by the time he reaches the prow, its moved 1.85 m away from the pier.
Assuming no water resistance to the boat’s motion, calculate the boat’s mass (not counting the man). Answer in units of kg.
