force, a push or a pull of an object resulting from the interaction with a another objectCauses motion, motion, when an object changes its location or position, gravity, an invisible force that pulls objects towards each otherFriction opposes force, friction, a force that acts against moving objects, intertia, when an object resists change to its motion, mass, The amount of stuff or matter that makes up and object, potential energy, The stored energy in an object at rest, kinetic energy, Energy possessed by an object in motion.

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