jaka wyskosc ma wierza z ktorej upszczony kamien spadl w ciagu 2 sekynd?
s=1/2at^2
a=10m/s2
s=1/2 *10* 2^2
s=1/2*10*4=20m
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s=1/2at^2
a=10m/s2
s=1/2 *10* 2^2
s=1/2*10*4=20m