Assume that the brakes in your car create a constant deceleration of 3.1 m/s2 regardless of how fast you are driving.

Question

part A= If you double your driving speed from 17 m/s to 34 m/s , does the distance required to come to a stop increase by a factor of 2 or a factor of 4?
part B= Calculate the stopping distance for initial speed of 17 m/s .

Answer 1

A. (2Vo)^2/Vo^2 = 4Vo^2/Vo^2 = 4.

B. V ^2 = Vo^2+2a*d = 0
17^2-6.2d = 0.
d = 46.6 m.

Answer 2

sus