A car is traveling 15 m/s when the driver sees a child standing on the road. He takes 0.8 s to react, then steps on the brakes and slows at 8.0 m/s2. How far does the car go before it stops?

Answer 1

d = Vo*t + (V^2-Vo^2)/2a.
d = 15m/s*0.8s + (0-225)/16 = 26.1 m.