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## Homework Statement

A motorist enters a freeway at 45km/h and accelerates uniformly to 99 km/h. From the odometer of the car, the driver knows she has travelled 0.2km. Find the acceleration of the car.

## Homework Equations

## The Attempt at a Solution

I attempted this:

v

^{2}= u

^{2}+ 2as

Substituting the values in I got this:

(99

^{2}-45

^{2})/0.4 = a

this gives 19440, so converting to m/sec I think I get 5400 m/sec

^{2}

This is definitely not right, any ideas why?

Cheers,

Adrian :)