Buoyancy is the ability or tendency of an object to float in a fluid, which can be a liquid or a gas. For example, if you push a beach ball into the water it will come out very fast because density in beach ball is lesser from water’s density(water’s density is 1,000 kg/m³). But if you put a brick i to the water it will sink because density of a brick is bigger than the water’s density. To calculate buoyancy you need to measure the water that displace. Weight is unit of newtons. The gravity is a force in earth pulls you down.

About the boat I tried to lots of air in it, because air helps to float(air floats because air have very less density) and I tried to make it wide than it will have a better balance.

Volume of Displaced Water (g) Mass of Displaced Water (N) weight of the displaced water = mass (kg) x 9.81 Buoyant force (N) Mass of Boat (g) weight of boat (N)

Volume of Displaced Water (g) Mass of Displaced Water (N) weight of the displaced water = mass (kg) x 9.81 Buoyant force (N) Mass of Boat (g) weight of boat (N)

Volume of Displaced Water (g) Mass of Displaced Water (N) weight of the displaced water = mass (kg) x 9.81 Buoyant force (N) Mass of Boat (g) weight of boat (N)

- Volume of Displaced Water (g): 25.4 g
- Mass of of displaced water: 2.54 N
- weight of the displaced water = mass (kg) x 9.81: 0.249 Kg
- Buoyant force (N) : 0.249 N
- Mass of the boat : 13 g
- Weight of the boat : 3.4 N

My boat did a good job on water, it could float forever without any weight, which means that my boat has good buoyancy. Sometimes when the boat has weights on it, it sank. When I put three coins on it, the boat lost a bit of balance but it still floated which means my boat is very buoyant. I think the only thing I need to change was the size of the boat because it would help with balance.