Question

A)200 m
B)350m
C)400m
D)300 m
E)250 m

Answer 1

$\underline{Sabemos \ que}: \\ \\ a = 2m/s^2 \\ v_0 = 30m/s \\ v = 50m/s \\ \\ \underline{Posicao \ final}: \\ \\ v^2 = v_0^2 + 2aS \\ 50^2 = 30^2 + 2 \cdot 2S \\ 2500 = 900 + 4S \\ 4S = 2500 - 900 \\ S = \frac{1600}{4} \\ \\ \boxed{S = 400m}$