Two bicycles approach one another, each traveling with a speed of 8.50 m/s.
(i) If bicyclist A beeps a 315-Hz horn, what frequency is heard by bicyclist B?
(ii) Which of the following would cause the greater increase in the frequency heard by bicyclist B: (1) Bicyclist A speeds up by 1.50 m/s, or (2) bicyclist B speeds up by 1.50 m/s?