Respostas

2014-07-22T12:05:26-03:00
S = 3000 km = 3 000 000 m

t = 1 h 40 min= 60+ 40 = 100 min = 6 000 s

V = ?

V=  \frac{S}{t} =  \frac{3.000.000}{6000} = 500

V = 500m/s