Gravity
the force of attraction that pulls all matter.
Energy
the ability to work. Energy makes things move.
Fluid Friction
fluid layers moving relative to each other (also known as drag). The viscosity of water slows the object (person) down.
Viscosity
thickness of fluid. Viscosity slows the object down. The higher the viscosity, the more friction will be created.
Potential Energy
the stored energy an object has because of its position.
Kinetic Energy
The energy of motion
Lubricant
a substance to lessen friction
Friction
a force that holds back the movement of a sliding object
Accelerate
speeding up
Inertia
the resistance of an object to change in its motion, including its direction