A driver moving at 30 m s^-1 spends 0.5 s of reaction time before braking with 6 m s^-2 acceleration. What is the minimum following distance?

1. Step: x_reaction = 30 * 0.5 = 15 m. 2. Step: x_braking = 30^2 / (2 * 6) = 900 / 12 = 75 m. 3. Step: x_total = 15 + 75 = 90 m.