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2014-06-30T00:34:16+03:00
V=d/t

d=v*t

1,5h=1,5*3600=5400sec

d=10cm/sec *5400sec

d=54 000cm= 540m are banda

2v=2*10cm/sec= 20cm/sec

t=d/v

t=54 000cm/20cm/sec

t=270sec= 4 min 30 sec
10 4 10
54 000 / 20 = 2700 sec. 2700 / 60 = 45 minute