Bardzo proszę o szybkie rozwiązanie !
Zad.1
Liczysz pole pod wykresem:
s=30*2+10+40=110km
=110km/5h=22km/h
Zad.2
s=60km
v1=80km/h=x/t
v2=60km/h=(60-x)/t
80=x/t
60=(60-x)/t
80t=x
60t=60-x
140t=60
t=6/14h
x=80t
x=80*6/14=34,3km
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Zad.1
Liczysz pole pod wykresem:
s=30*2+10+40=110km
Zad.2
s=60km
v1=80km/h=x/t
v2=60km/h=(60-x)/t
80=x/t
60=(60-x)/t
80t=x
60t=60-x
140t=60
t=6/14h
x=80t
x=80*6/14=34,3km