After giving an intense performance, a confused and disoriented flautist has wandered onto the motorway! They are playing a constant 300Hz on their flute and are essentially stationary If you are driving along the motorway at 100 km/h(27.8 m/s). What is the frequency you hear from the flautist's you hear from the flautist's instrument before you pass them and after you pass them?

Answer 1

This is also a part of it!!

Coincidently the horn on your car, which you sound as you narrowly miss the flautist in problem 1, also give a constant 300 Hz. tone. What frequency does the flautist hear before and after you pass them?

Answer 2

Toward:
fo = fs (1+vo/v)
away is minus instead of plus.