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## Homework Statement

A plane must reach a velocity of 2.4 km/h to lift off. If it has 45s of runway time, what must its acceleration be?

vf= 2.4km/h or 0.666666666666 m/s

vi=0.0 m/s

Δt=45s

a= ?

## Homework Equations

vf= vi+ aΔt

## The Attempt at a Solution

vf- vi

------- = a

Δt

0.666666666-0.0

---------------- = a

45 s

a= 0.014814814 m/s^2

a= 1.5 * 10^2 m/s^2

i did all of this but i am getting the wrong answer. Can someone tell me what i am doing wrong?