7) Calculate the force of gravity between the earth and the satellite: F, -Gm. me/r?. (G = 6.7 x 10-11 Nm2/kg. Mass of earth = 6.0 x 1024 kg.) 8) Calculate the acceleration of the satellite using Newton's 2nd Law. a - F/m. a - Gx (mass of earth) /radius? (Mass of earth = 6.0 x 1024 kg.)

0.19 m/s and 0.45 m/s

a.) travels faster in solids because the particles are closer together.

air is a gas water is a liquid

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