Odpowiedzi

2010-02-01T18:44:37+01:00
S=at²/2

a=F/m
a=0,6N/0,5kg
a=1,2m/s²

s=1,2m/s²•(20s)² ÷2
s=1,2m/s²•400s² ÷2
s=240m