Uniformly accelerated motion

v₀, a, t → distance, velocity; + free fall

Parameters

Initial velocity v₀, m/s

Acceleration a, m/s²

Time t, s

v = v₀ + a·t; s = v₀·t + a·t²/2; without time: v² = v₀² + 2·a·s. Free fall: a = g = 9.81 m/s². Braking distance of a car at 60 km/h (a ≈ −7 m/s²) ≈ 20 m + driver reaction ~17 m — distance is critical.

Results

v = v₀ + a·t: 29.43 м/с
s = v₀t + at²/2: 44.14 м
Speed = 29.43 м/с = 105.9 км/год
Time for 100 m: 4.52 с