vocab

Term Definition
motion an objects change in postion relative to a reference point
speed distance traveled divided by the time interval during which the motion occurred
velocity the speed of an object in a particular
acceleration the rate at which velocity changes over time; an object accelerates if its speed, direction, or both changes
force a push or pull exerted on an object in order to change the motion of the object, force has size and direction
newton the SI unit for force
net force combination of all the forces acting on an object
friction force that opposes motion between two surfaces that are in contact
gravity a force attraction between objects that is due to their masses
weight measure of the gravitational force exerted on an object, its value can change with the location of the object in the universe
mass measure of the amount of matter in an object

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