When a car is 100 meters from its starting position traveling at 60.0 m/s., it starts braking and comes to a stop 350 meters from its starting position in 8.3 s.

Answer 1

d = 350 100 = 250 m. = Braking distance.
a=(V^2-Vo^3)/2d=(0-60^2)/500=-7.2 m/s^2