One of the fastest recorded winning average speeds in the indianapolis 500 auto race was 191. 63 miles per hour. What is the value of the 6 in this speed?.

its c its is a mixture of gases

this means that the temperature of both substances will be equal

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me