Odpowiedź:
Szczegółowe wyjaśnienie:
v=s/t /*t
s=vt /:v
t=s/v
t=2h
v=30 km/h
s=30*2=60 km
t=3h
v=10 km/h
s=10*3=30 km
t=5 h
v=60 km/h
s=60*5=300 km/h
t=4 h
v=10 km/h
s=10*4=40 km
t=20 h
v=120 km/h
s=120*20=2400 km
t=3h
v=12 km/h
s=12*3=36 km
t=4 h
v=80 km/h
s=80*4=320 km
t=5 h
v=40 km/h
s=40*5=200 km
_____________________
v=200/4=50 km/h
v=210/3=70 km/h
v=300/6=50 km/h
v=300/3=100 km/h
v=100/2=50 km/h
v=300/4=75 km/h
v=400/5=80 km/h
v=360/4=90 km/h
v=560/7=80 km/h
_________________________
t=100/50 =2h
t=20/10=2 h
t=45/9=5 h
t=180/90=2h
t=120/40=3 h
t=36/12=3 h
t=50/10=5 h
t=60/12=5 h
t=80/20=4 h