A small ferry boat is 4.0m wide and 6.0m long and is floating in fresh water(density =1,000kg/m^3) when a loaded truck pulls on to it, the boat sinks an additional 4.0cm into the water.
a) what is the weight of the truck?
B) as the boat moved into salt water density =1,030 kg/m^3,does the ferry rise, sink, or remain the same relative to the water?
C) if there is a change how much?