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V=108km/h=30m/s
a=5m/s²
Vk=0
Vk=Vo-at
at=Vo
t=Vo/a
t=30/5=6s
S=at²/2
S=5*36/2=90m
2.
Opóźnienie w drugiej częsci ruchu wynosi
a=4/20=0,2m/s²
t=20s
Vo=6m/s
S=Vot+Vot-(at²/2)
S=2*6*20-(0,2*20²/2)=240-40=200m