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Motion

Unit 1,Lessson 1-4

TermDefinition
Position The location of an object.
reference point A location to which another location is compared.
Motion An object's change in position relative to a reference point.
Speed The distance traveled divided by the time interval during which the motion occurred.
Vector A quantity that has both size and direction.
Velocity The speed of an object in a particular direction.
Acceleration The rate at which velocity changes over time;an object acceleration if its speed,direction,or both change.
Centripetal acceleration The acceleration directed toward the center of a circular path.
Force A push or pull exerted on an object in order to change the motion of the object.
Net force The combination of all of the forces acting on an object.
inertia The tendency of an object to resist a change in motion unless an outside force acts on the object.
Gravity A force of attraction between objects that is due to their masses.
Free fall The motion of a body when only the force of gravity is acting on the body.
Orbit The path that a body follows as it travels around another body in space
Created by: 18renj0502
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