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ch. 5 vocal

chapter 5 vocal

motion an objects change in position relative to a reference point.
speed the distance traveled divided by the time interval during which the motion occurred.
velocity the speed of an object in a particular direction.
acceleration the rate at which velocity changes over time;an object accelerates if its speed, direction, or both change.
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 force. (symbol N
net force the combination of all of the forces acting on an object.
friction a force that opposes motion between two surfaces that are in contact
gravity a force of attraction between objects that is due to their masses.
weight a measure of the gravitational force exerted on an object; its value can change with the location of the object in the universe.
mass a measure of the amount of matter in an object
Created by: dalton223344