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S= ?
sprowadzam jednostki do układu podstawowego SI
V = 108km/s = 108*1000m/3600s = 30m/s
S = V*t
S = 30*0,75 = 22,5m
0.75 x 30 m/s = 22. 5 m/s
t= 3/4s
v= 108 km/h=20m/s
szukane=?
s=?
v=s/t
s=v×t
s= 30m/s × 3/4 s
s= 22,5m