Acceleration - The rate at which an object that speeds up, slows down, or turns, Contact Force - A force that happens when physical interaction between two objects, Gravity - The force that pulls things towards the Earth, Mass - The amount of matter in an object, typically measured in kilograms or grams, Velocity - Speed in a specific direction; a vector quantity, Energy - The ability to do work or cause change, Potential Energy - Stored energy , Force - A push or pull that can cause an object to accelerate, decelerate, or change direction, Friction - A contact force that opposes the relative motion of two surfaces in contact,

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