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? - 10min
60 / 10=6
8km/6=8000m/6=1333,3=1333
odp.jedzie 1333metry
t=Δt₀+4
t=6min+4min
t=10min=1/6h
v=8 km/h
v=s/t
s=vt
s=8 km/h*1/6h
s=1 1/3km
t=6minut
8km/h=8km/60 minut
6 minut=0,1 godziny
t=0,1 h
v= prędkosc zwykła
s=0,1h v
t=6+4=10 minut=⅙h
v=v-8km/h
s=⅙h(v-8km/h)
0,1v=⅙v-⁸/₆km
0,1v-⅙v=-⁸/₆km
-¹/₁₅v=-⁸/₆
v=-⁸/₆:-¹/₁₅
v=20km/h
s=20km/g×0,1h
s=2km=droga jacka do szkoły