Energy, the ability to do work, Gravity, A type of force between any two objects. The closer the objects are to each other, the greater the force. The larger the mass of an object, the greater the force., G-Force, a measure of acceleration, Centripetal Force, Center-seeking force. This real force causes an object to move in a circle. (Ball twirled on a string), Inertia, Resistance to movement or change in movement., Kinetic Energy, The energy of motion. Anything moving has kinetic energy, Potential Energy, Stored energy. (Examples: Wind-up spring toy, rubber band stretched or a lifted book or marble waiting to fall.), Acceleration, Any change in speed ( velocity ) or direction; positive acceleration is speeding up, negative acceleration is slowing down., Motion, Any kind of movement, Conservation of Energy, energy can neither be created nor destroyed - only converted from one form of energy to another, Velocity, Speed with direction included, Mass, The amount of stuff something is made of. (Also its weight on earth. Weight changes with gravity, but mass does not.), Weight, The force of an object pulled toward the earth (or planet ) due to gravity. (In the absence of gravity, an object is weightless.), Momentum, This is speed and mass put together. Momentum = m x v. The mass of an object multiplied by its velocity., Friction, The force that resists motion such as Air, Water, or when two surfaces rub against each other.

Roller Coaster Physics

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