acceleration - a change in velocity; speeding up, slowing down, change in direction, applied force - a push or pull, balanced force - net force is 0, forces cancel each other out, friction - opposite force of movement between two touching surfaces, net force - combination of all forces on an object, speed - distance something travels in a certain amount of time, unbalanced force - net force greater than 0 in one direction, gravity - attractive force between objects with mass, inertia - resistance to change in motion, mass - amount of matter in an solid, liquid, or gas, law of action-reaction - states that for every action there is an equal and opposite reaction, law of force and acceleration - states that an object's acceleration is equal to the force divided by mass of an object, law of inertia - states that an object at rest will remain at rest and an object in motion will remain in motion unless acted on by an outside force, Newton (N) - unit to measure force, average speed - total distance something has traveled divided by total time, motion - change in position, velocity - speed in a certain direction, deceleration - slowing down,

Forces and Motion Vocabulary

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