Respostas

2014-06-25T23:16:13-03:00
Vm=x/t
0.15= 27000/t
t=1800s ou 30min
  • Usuário do Brainly
2014-06-25T23:55:29-03:00
1km --- 1000m 
27km --- x
x=27000m

Vm=ΔS/ΔT
15=27000/ΔT
15ΔT=27000
ΔT=27000/15
\boxed{\boxed{T=1.800s}}