Force - a push, pull or twist in a specific direction, Push - to exert a force away from something, Pull - to exert a force towards something, Newton - unit of measurement for Force, Spring Balance - Instrument used to measure force, Contact Force - A force that acts only between objects that are touching., Non Contact Force - A force that acts between objects even though the objects are not touching., Arrows - Used to measure sizes and direction of force, Accelerate - Speed up, Decelerate - Slow down,

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