A locket hangs on a lightweight thread from the rear view mirror of a sports car. At what angle from vertical does the locket hang when the car is accelerating forward at a constant 6.50 m/h²?​

answer; how far out of place which the object finished relative to the starting location;

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

third one with arrows on top of each other going the same direction