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8.0 Science Vocab

TermDefinition
Reference point The starting point you use to describe the motion or the position of an object
Position An object's distance and direction from a refrence point
Displacement The difference between the initial, or starting, position and the final position of an object that has moved
Motion The process of changing position
Speed The distance an object moves divided by the time it takes to move that distance
Velocity The speed and direction of a moving object
Acceleration A measure of the change in velocity during a period of time
Distance-time graph A graph that shows how distance and time are related
Speed-time graph A graph that shows the speed of an object on the y-axis nd time on the x-axis
Force A push or pull on an object
Contact force A push or pull on ane object by another object that is touching it
Noncontact force A force that one object applies to another object without touching it
Gravity A attractive force that exists between all objects that have mass
Friction A contact force that resists the sliding motion of two surfaces that are touching
Air resistance A frictional force between air and objects moving through it
Newton's first law of motion law that states that if the net force acting on an object is zero, the motion of the object does not change
Newton's second law of motion law that states that the acceleration of an object is equal to the net force exerted on the object divided by the object’s mass.
Newton's third law of motion law that states that for every action there is an equal and opposite reaction.
Created by: user-1984486
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