- #1

chocolatelover

- 239

- 0

## Homework Statement

Prove that if the acceleration is constant, the average velocity=vf+vi/2

## Homework Equations

average velocity=xf-xi/change in t

xf=xi+vit+1/2at^2

vf^2=vi^2+2a(xf-xi)

## The Attempt at a Solution

I started out by drawing a diagram:

_ _ _ _ _ _ _ _ _

Vi v vf

20km/h 20km/h

20+20/2=20

Do you think this proves it or is there another way of doing it?

Thank you in advance