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Chapter 5

Motion An objects change in position over time when compared with a reference point
Speed The rate at which an object moves; this depends on the distance travelled and the time taken to travel the distance
Velocity The speed of an object in a particular direction
Acceleration The rate at which velocity changes because speed changes, direction changes, or both speed and direction change
Gravity A force of attraction between objects that is due to their masses
Weight A measure of the gravitational force exerted on an object
Mass The amount of matter something is made of
Force A push or pull; all forces have both size and direction
Newton The SI unit of force
Net Force The force that results from combining all the forces exerted on an object
Friction A force that opposes option between two surfaces that are touching
Created by: DanceMelon563