Army helps with covid serge testing in Bolton

The transcript consists of a brief exchange involving a question about distance and several affirmative responses.

What do you think the question 'How far?' implies in a conversation?

What could be the context behind the response 'Yep.'?

How does the repetition of 'Yep.' affect the conversation?

What does the response 'Yeah.' suggest about the speaker's attitude?

In what situations might someone respond with 'Yep.' or 'Yeah.'?