Quote Originally Posted by drone View Post
The Delta Tau Chi Deathmobile is heading full steam at the mayor's grandstand during the Homecoming parade. As they approach, the Deltas yell "Ramming Speeeeeed", tailing off with a pitch of C5 (523.25 Hz). If Dean Wormer hears the pitch as D5, how fast is the Deathmobile traveling?

Assume a dry fall day in Faber (roughly sea level) with no wind and a temperature of 15C.
I didn't know how to figure this one out, but I am very interested in the principles behind it and the math to solve it broken down. I take it you have to exploit the doppler effect to figure out the speed?