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Physics Vocab

Chapter 11 vocabulary

TermDefinition
Motion An objects change in position relative to its reference point.
Frame Of Reference A system for specifying the location of objects in space and time.
Displacement The change of the position of an object.
Speed The distance traveled divided by the time interval; where the motion occurred.
Velocity The speed in a particular direction.
Acceleration The rate at which velocity changes over time. (an objects accelerates if its speed, direction, or both change)
Force An action exerted on a body in order to change the body's state, rest or motion; force has magnitude and direction.
Friction A force that opposes motion between two surfaces that are in contact with each other.
Static friction The force that resists the sliding motion between two surfaces that are in contact and at rest.
Kinetic friction The force that opposes the movement of two surfaces that are in contact and are moving over each other.
Average Speed Equation Speed= distance V= d _______ __ Time t
Average Acceleration (for straight line motion) Acceleration= final velocity - initial velocity a= ¥v ______________________ ___ Time t
Created by: hnixo97539
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