Respostas

2014-07-21T09:41:00-03:00
Olá, Sandrinhasantos!

S = 50 - 20 t
S = 50 - 20 . 2
S = 50 - 40
S = 10m
2014-07-21T09:47:25-03:00
S=50-20t
t=2s
S=50-20.2
S= 50-40
S= 10
1 4 1