Answer:
± 5.59
Step-by-step explanation:
We already know the distance and the acceleration, but we're looking for the time.
D = 1/2at²
50 = 1/2 · 3.2t²
50 · 2 = 1/2 · 2 · 3.2t²
100 = 3.2t²
t = ± 5.59
5.59 · 3.2² = 100
