The minimum stopping distance for a car depends on the driver’sreaction time and the car’s acceleration when the brakes areapplied. A 1000 kg car traveling on a level road at speed 18 m/stravels 15 m (due to driver’s reaction time) before braking startsand then skids with the wheels locked another 30 m. Answer thefollowing questions concerning this stopping process. (Ignore airresistance and assume g = 10 m/s^2.)
a) What is the driver’s reaction time?
b)  How long did it take for the car to come to acomplete stop: include both segments – the one when the car wasstill going at a constant speed, and the other one when the carbrakes were applied?
c) Sketch a v(t) (I believe it is a velocity-time) graph for thecar motion for the entire braking process of the car: from themoment the driver noticed danger to the moment the car completelystopped. Indicate relevant times and velocities on the graph.
d) Show that the magnitude of the net force acting on the carwhen the car was skidding was 5400 N.
I'm not sure how I should start this. If someone could explainand answer It would be great. (:
