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v = 70 km/h = 175/9 m/s
a = v / t = 175 / 18 ≈ 9,72 m/s²
Δv = 70 km/h
t = 2s
Szukane:
a = ?
Wzór:
a = Δv/t
Najpierw jednak zamieniamy km/h na m/s.
70 * 1000m / 3600s = 19,4 m/s
Obliczenia:
a = 19,4m/s / 2x
a = 9,7m/s².