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V-prędkość
t-czas
S-droga
a=V/t
V=s/t
4=V/1
V=4
4=S/1
S=4
2.a=delta V :delta t
a=100:20
a=5m/s2
a = 4m/s2 s = ?
t = 1 s
rozwiązanie
s= a*t2 / 2
s = 4m/s2 * 1 2 / 2
s = 2 m
odp. w czasie jednej sekundy samochód przejechał 2 m.
2.
v1 = 150 m/s
v2 = 250 m/s
t = 20 s
250 - 150 = 100
a = v/t
a = 100 / 20 = 5 m/ s2