Respostas

2014-03-07T16:31:42-03:00
Letra A)/\S=Vo*t +-at²/2 --- /\S= 0*4+3*4²/2 ---- /\S=24 m
letra B) F=m.a --- F=5*3=15N
2014-03-07T17:54:56-03:00
Resposta

A

a = 3m/s²
t = 4s

S = at²/2
S = 3.4²/2
S = 3.16/2
S = 48/2
S = 24m

B

F = ma
F = 5.3
F = 15N