How would “hard on the gas” be different if the author chose different synonyms?

Consider the music used in the scene where scout meets boo radley for the first time, and answer each of the following questions in about two to three sentences. how would you describe the tone of the music while boo is hiding behind the door? compare that to the tone of the music when he is brought into the light and scout smiles at him. how does the music change? what effect does that change have on the way the viewer perceives the character of boo radley?

Which historical detail can best clarify a reader’s understanding of the information in the excerpt? immigrant factory workers who spoke the same language were separated from each other at work. immigrant factory workers who spoke the same language were known to talk too much at work. immigrant factory workers had to pay rent for their chairs and the supplies they needed at work. immigrant factory workers were crowded into unsafe buildings with locked doors and fire escapes.

Pls, i really need on this question?