An automobile is traveling 50 km/h². It deccerate at 5 m/s², how far will it take to travel after the brake are applied?

Vf^2 = Vo^2 + 2a*d.

Vf = 0.
Vo = 50000m/3600s = 13.9 m/s.
a = -5m/s^2.
d = ?