A 4.3 kg mass, initially at rest, is subjected to the following forces: 43.1 N at 24.2o north of east, 55.7 N south, and 45.7 N at 47.7o south of west. What is the direction of acceleration of the mass? Give the direction as W of S

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

the answer is 100. i just did this lesson and got a 100% on it. : )

-fishtank