Emergency Braking: Stopping Distance of 48m

[chawki]

Homework Statement

An automobile is traveling at 16 m/s. The driver perceives a need to stop and applies the
brakes producing a (negative) acceleration of 4.0 m/S2. Take the reaction time of the
driver, the time to move from the go pedal to the stop pedal, as 1,0 s.

Homework Equations

How far does it take for the car to stop?

The Attempt at a Solution

during his reaction time, he traveled d=16*1=16m.
we calculate the distance of braking:
V²-V₀²=2*a*x
x= 32m.
the whole distance is 16+32=48m and that's what we have been asked to find.

 

[supratim1]

same kind of question. and you have answered it yourself.