Respuesta :

templarscouta

[tex]a = \frac{v}{t} [/tex]
so just plug in the velocity for v, which is 20 m/s
and plug in the time for seconds which is 3.5s

so
[tex]a = \frac{20 \frac{m}{s} }{3.5s} [/tex]
that will give you your answer