# Shared Flashcard Set

## Details

kinematics
velocity
10
Physics
12/19/2006

Term
Definition
 break into components x and y add all x and ysthen magnitude is = the square root of (xtotal^2 + ytotal^2)
Term
 finding theta of a vector
Definition
 tan theta = y/x
Term
 subtracting a vector
Definition
 must multiply the x and y component of vector subtracted by -1 then same as adding
Term
 average velocity
Definition
 ratio of displacement/ ∆timeaverage velocity=∆x/∆t
Term
 instantaneous veocity
Definition
 at a single instantv=lim ∆x/∆t as ∆t approaches 0
Term
 average speed
Definition
 average speed=distance/times=d/∆t(scalar)
Term
 instantaneous speed
Definition
 the magnitude of the instantaneous velocity vector (scalar)
Term
 average acceleration
Definition
 is the change in instantaneous velocity over timeā=∆v/∆t
Term
 instantaneous acceleration
Definition
 the acceleration at a specific pointa=lim ∆v/∆t as t approaches 0
Term
 kinematic equations
Definition
 v=v0+atx=v0t+(at^2)/2v^2=v0^2+2axaverage velocity=(v0+v)/2x=(average velocity)t=((v0+v)/2)t
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