kinematics

[timmy263610]

1. The problem statement, all variables and given/known data
The minimum stopping distance for a car traveling at a speed of 30 m/s is 60 m, including the distance traveled during the driver's reaction time of 0.460 s.

What is the minimum stopping distance for the same car traveling at a speed of 39.0 m/s?


2. Relevant equations



3. The attempt at a solution

I keep getting 78 m for a final answer but my friends say its wrong. Im stuck

[neutrino]

Show us your work, and we may be able to tell where you might have gone wrong.