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a=1,5m/s²
t=?
a=v/t => t=v/a
t=12m/s : 1,5m/s² = 8s
Odp. Samochód uzyska taką prędkość po 8 sekundach.
v=12m/s
v=s/t
a=v/t
t=v/a
t=12m/s:1.5m/s do kwadratu do kwadratu
t=8
po 8 sekundach