Odpowiedzi

2009-12-02T16:31:29+01:00
60km- 60min -> 60000m-3600s

60000m - 3600s
x m - 30s

x=(30x60000)/3600
x=500m

pociąg miał 500m


2009-12-02T16:34:44+01:00
1 km/h = 1000m/3600s
60 km/h= 60000/3600s
60km/h =18,8m/s
V = 60 km/h
t = 30s
s=?
s = v x t
s = 18,8 x 30
s= 500
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