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s= a t2/2 = 2m/s2 x ( 2s)2/2 = 2m x 4/2 = 4m
s = a*t^2 / 2
gdzie:
s - droga
a - przyspieszenie
t - czas
dane:
s = ?
a = 2m/s^2
t = 2s
rozwiązanie:
s = 2m/s^2 * (2s)^2 / 2
s = 2m/s^2 * 4s^2 / 2
s = 4m