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9 Cards in this Set
 Front
 Back
position

the location of the particle with respect to a chosen reference point that we can consider to be the origin of a coordinate system


displacement (of a particle)

the change in position (Δx=xfxi) in some time interval


distance

the length of a path followed by a particle


vector quantity

requires the specification of both direction and magnitude


scalar quantity

numerical value and no direction


average velocity (of a particle)

the particles displacement (Δx) divided by the time interval (Δt)
p27 

average speed

the total distance travelled divided by the total time interval required to travel that distance


(instantaneous) velocity

the limiting value of the ratio Δx/Δt as Δt approaches 0. also called the derivative of x with respect to t, written as dx/dt.
p29(2.4)(2.5) 

instantaneous speed

the magnitude of its instantaneous velocity
(no direction and no algebraic sign) 