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s=at^2/2
s=2m/s*4s^2/2
s=16 m
ale nie jestem pewna
rzeczywiście wynik to 16 ;]
1s - 2m
2s - 2*2= 4m
3s - 2 *4= 8m
4s 2*8= 16 metrów ;]
s=4s x 2m/s
s=8m