Guys, please help me if your kind and if you want to be kind I will mark branliest just please help! Someone in your house is watching TV. You put your ear to the wall to listen to the TV. Then you walk into the room to watch TV. When you listen to the voices while in the room, they sound different than listening to them through the wall.

Why do the voices sound different when you listen to them through the wall?

Sound waves change frequency over long distances

Sound waves do not pass through solid materials

Sound waves travel at different speeds when traveling through different materials

Your ear processes sound differently when it goes through a solid.

Sound waves travel at different speed when traveling through different materials.

Explanation:

Sound travels quickly through air. However it takes longer for sound to travel through other materials like water. Sound may travel faster through water than liquid metal. This is because the different materials of different densities have a different sound speed when sound is passed through it.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied