Answer:
The open umbrella WILL NOT hit the ground first, the closed one will.
Explanation:
I know this because an open umbrella has more surface area and thus more room for air particles to collide with it and slow it down.
What questions do you want answered?
Both Calpurnia and Atticus are people respectful of the other. Calpurnia is angry at Scout because the girl does not treat Walter as an equal and acts in a rude way. Atticus supports Calpurnia's actions because he is also a moral man who tries to teach his children about respect.