Una bola se desliza por la superficie de una mesa y alcanza el borde de la misma con una velocidad de 0,5 m/s. Si el tablero de la mesa está situado a 1 m de altura, calcula la distancia horizontal con respecto al borde a la que impactará con el suelo. Determina también el tiempo que tarda en llegar al suelo

Alinear relationship would look like a straight line on the graph. it could have a positive negative or 0 slope. so it could be a line potentially going in any direction but it must be perfectly straight.

Ithink the answer is c. make unnecessarily  wide gestures 

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.