Why does the pitch of an airplane sound like it goes from high to low when it flies overhead?
In: Physics
If you and I catch/throw a ball at the same speed and distance, its the same thing repeating; the same frequency. If I walk closer and closer as we throw the ball at the same speed, we increase how frequently (the frequency) we catch/throw it. If I’m moving away, the opposite.
Sound is just the frequency (how often) we sense the air waves move. If one of us was moving faster than we threw the ball, the game of catch wouldn’t even work, which would be like something moving faster than the speed of sound.
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