1. The problem statement, all variables and given/known data Two boats move parallel each other inertially in opposite directions. They both have a speed of 6m/s. When they are near we move a load from one boat to the other. After this the second boat continues in the same direction with a speed of 4m/s. Find the mass of the second boat if the first boat weighs 5000N and the load weighs 600N. Water resistance should not be taken into consideration 2. Relevant equations 3. The attempt at a solution I tried a few ways but none of them takes me to the same solution as the book. It should be 300kg but I keep getting other answers.