Answer :
Final answer:
The boat's mass (excluding the man) after his movement, determined to be 73.32 kg using conservation of momentum. Therefore, The correct option is A) 73.32 kg.
Explanation:
The mass of the boat (excluding the man) after the man stands up and walks from the stern to the prow, causing the prow to move 1.93 m away from the pier can be calculated using the concept of conservation of momentum.
When the man stands up and walks, he exerts a force on the boat that causes it to move. By applying the conservation of momentum principle, the boat's mass after the man's movement is 73.32 kg.
