How fast is the airplane moving (and in what direction) if the airplane hears a frequency from the balloon that is 3/4 of what the balloon claims it should be?
How fast is the airplane moving (and in what direction) if the balloon hears a frequency from the airplane that is 3/4 of what the airplane claims it should be?
What happens if one object is moving at a speed equal to the speed of sound? Does your answer depend on which object is moving, or on which direction it is moving?
