posted by Mike .
A car is travelling along a highway with a speed of 25 m/s when the driver sees an obstruction 1.80*10^2 m directly ahead. It takes the driver 0.80s to react and begin braking.
a) How far does the car travel before it begins to slow down?
b) How long will it take the car to stop once the brakes are applied, provided the car stops just before the obstruction?
c) What is the value of the acceleration of the car if it just misses hitting the obstruction? Assume the acceleration is uniform.