Respostas

2014-08-04T14:49:48-03:00
\boxed{F=m*a}

3333,3=1200*a

3333,3/1200=a

a=2,77775m/s^2\boxed{v=vo+a*t}

27,7=0+2,77775*t

t=27,7/2,77775

\boxed{t=9,97s}

Aproximadamente 10 segundos alternativa D