Energy - The ability to make object change., Component - A small part of a larger system., Distance Force - A push or pull between two objects without having to touch one another., Force - A push or pull between two objects in opposite directions., Contact Force - A force exerted only when two objects are touching., Gravitational Force - An attractive force that acts between any two masses., Magnetic Force - A force produced when magnetic poles interact., System - A group of components interacting together as a whole., Balanced Force - When the applied force in one direction is equal to the applied force in the opposite direction., Net Force - The sum of all forces acting on an object., Unbalanced Force - When the applied force in one directions is greater than the applied force in the opposite direction., Newtons (N) - The unit used to measure a force., Free-body Diagram - Shows only the forces acting on an object., Opposing/Counteracting Forces - Forces acting in opposite directions., Reinforcing Forces - Forces acting in the same directions, Normal Force - A push for upward caused by a surface., Weight - The force of gravity on an object's mass., Applied Force - A force from one object onto another object., Friction - A force that opposes an object's motion due to contact between surfaces., Centripetal Force - The inward seeking force acting between objects within a circular path., Speed - The distance traveled over a period of time., Accelerate - When an object changes its motion by speeding up, slowing down or changing direction.,

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