In which of these scenarios would the sound of the drumstick hitting the metal bar get to you in the least amount of time? Explain your answer.

Answer:

The sound would reach you in the least amount of time if you were listening through the metal bar (a solid) rather than through the air (a gas). This is because sound waves travel fastest through solids. In a solid, the particles are packed much more closely together than in a liquid or a gas, which allows the vibrations to be transferred from particle to particle much more quickly.