Respostas

2014-08-05T17:38:26-03:00
a-
a-
V = Vo + at

V = 6 - 3t

Comparando fórmulas vemos que,
Vo = 6 m/s
a = -3 m/s²

b-
S = So + Vo * t + at²/2
S = 15 + 6 * t - 3t²/2
S = 15 + 6t - 1,5t²
2014-08-05T18:10:23-03:00