Respostas

2014-03-28T08:00:13-03:00
Resposta

2

S = 1,5 + 0,3
S = 1,8km = 1800m
V = 18km/h = 5m/s

V = S / T

T = S / V

T = 1800 /5

T = 360s = 6 minutos