Question

Determine a aceleração de um veículo que, partindo
do repouso, atinge a velocidade de 108 km/h depois de
percorrer 30 m.
a) 10 m/s2
c)20 m/s2
b) 15 m/s2
d) 25 m/s2 e) 30 m/s2
​

Answer 1

$\large{\begin{array}{l}\sf 108\,km/h\rightarrow30\,m/s\\\\\sf v^2=v_0^2+2a\cdot\Delta S\\\\\sf 30^2=0+2a\cdot30\\\\\sf900=60a\\\\\sf60a=900\\\\\sf a=\dfrac{900}{60}\\\\\boxed{\boxed{\sf a=15\,m/s^2}}\end{array}}$