Final answer:
The statement "ask not what your country can do for you - ask what you can do for your country" impacts the tone of the address by emphasizing the speaker's passionate tone about the power of the American people.
Step-by-step explanation:
The statement "ask not what your country can do for you - ask what you can do for your country" impacts the tone of the address by emphasizing the speaker's passionate tone about the power of the American people. This statement encourages citizens to contribute to their country and suggests that individuals have a responsibility to actively participate in the betterment of their nation. It conveys a sense of collective responsibility and highlights the importance of civic engagement.