Respostas

2014-03-27T20:07:19-03:00
Resposta

S1 = 10.19
S1 = 190m

S2 = 100m

S = 190 + 100
S = 290m

V = 20m/s

V = S / t

t = S / V

t = 290 /20

t = 14,5s