Respostas

2013-04-14T16:24:41-03:00

v = s/t

3.0x10^8 = 1,5x10^11 / t

t = 1,5x10^11 / 3,0x10^8
t = 0,5x10^3
t = 5,0x10^2 segundos

3 4 3