## 2-3 : Analysis Model: Particle Under Constant Velocity

$v_{x}=\frac{\Delta x}{\Delta t}$  (2.6)

Remembering that  $\Delta x=x_{f}-x_{i}$  ,we see that   $v_{x}=\frac{x_{f}-x_{i}}{\Delta t}$  , or  $x_{f}=x_{i}+v_{x}\Delta t$

Position as function of time for the particle under constant velocity model

 $x_{f}=x_{i}+v_{x} t$ ( for constant  $v_{x}$)   (2.7)

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