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.
The Attempt at a Solution
I attempted this:
v2 = u2 + 2as
Substituting the values in I got this:
(992 -452)/0.4 = a
this gives 19440, so converting to m/sec I think I get 5400 m/sec2
This is definitely not right, any ideas why?