A ball starts from rest and accelerates at 0.505 m/s2 while moving down an inclined plane 9.10 m long. When it reaches the bottom, the ball rolls up another plane, where, after moving 13.3 m, it comes to rest. What is the speed of the ball at the bottom of the first plane

Sounds propagates through some kind of medium. usually it's air, but it goes just as well through solid objects like walls, windows etc. a soundwave will compress the (air)molecules in front of it, and if this increased density wave hits your ears, you register it as sound. solid objects like walls are a lot denser than air, this means that they will damp a wave, but also carry it easier.