Slowing a Car from 25mi/hr to Stop in 2s: How Long?

[ismailshajji]

the brakes of a car can slow it down from 60 mi/hr to 40mi/hr in 2 s. how long will it take to bring the car to a stop from an initial velocity of 25 mi/hr at the same acceleration?

 

[Lsos]

You have 60 peanuts and you can eat them so fast, that in 2 seconds you have 40.

Hint: That's means you can eat 20 peanuts in 2 seconds!

At that speed, how long will it take you to eat 25 peanuts?

 

[xxChrisxx]

Assuming a constant rate of peanut consumption.