Romeo (74.0 kilogram) entertains Juliet (58.0 kilogram) by playing his guitar from the rear of their boat at rest in still water, 3.50 meter away from Juliet, who is in the front of the boat. After the serenade, Juliet carefully moves to the rear of the boat (away from shore) to plant a kiss on Romeo's cheek. Obtain how far does the 81.0 kilogram boat move toward the shore it is facing?