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Pozdrawiam, Adam
m = 1,2 t = 1200 kg
v = 72 km/h = 72 *1000m/3600s = 20 m/s
t = 5 s
szukane:
F = ?
F = m * a
a = v/t
F = m * v/t = 1200kg * 20m/s /5s
F = 4 800 N = 4,8 kN