Odpowiedź:
v1=54km/h=15m/s
v2=81km/h=22,5m/s
v3=108km/h=30m/s
t1=30s
t2=90s
t3=120s
s=v1*t3+0,5*(v3-v1)*t1+0,5(v2-v1)*(t3-t2)
s=15m/s*120s+0,5*(30-15)m/s*30s+0,5(22,5-15)m/s*(120-90)s
s=15m/s*120s+0,5*15m/s*30s+0,5*7,5m/s*30s
s=1800m+225m+112,5m
s=2137,5m
